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Future House 13

Today is my birthday and I'm three times older than I was six years ago. What is my age?

We know that my age divided by three is equal to my age minus six therefore X/3 = X-6 where X = My age This means that X = 3X - 18 because we can multiply both sides by 3 This also means that -2X=-18 because we can subtract 3X from the right side. Therefore X = 9 because - 18/-2 =<<TOOL:calculator-18/-2TOOL>><<OBS9OBS>>9 <<TOOL:check_answer9TOOL>><<OBSTrueOBS>>

train_0600

Janet's grades for her first semester of college were 90, 80, 70, and 100. If her semester 2 average was 82 percent, how much higher was her semester 1 average compared to her semester 2 average?

First add all Janet's grade for the first semester of college: 90 + 80 + 70 + 100 =<<TOOL:calculator90+80+70+100TOOL>><<OBS340OBS>>340 Then divide that number by 4 to find her average grade: 340 / 4 =<<TOOL:calculator340/4TOOL>><<OBS85OBS>>85 Then subtract her semester 2 average to find the difference: 85 - 82 =<<TOOL:calculator85-82TOOL>><<OBS3OBS>>3 <<TOOL:check_answer3TOOL>><<OBSTrueOBS>>

train_0601

James is trying to create a new breed of kittens with extra-long tails. Each generation of kittens he breeds has a tail 25% longer than the last generation. If the first generation has tails 16 cm long, how long are the third generation's tails?

First find how much longer the second generation's tails are: 25% * 16 cm =<<TOOL:calculator25*.01*16TOOL>><<OBS4OBS>>4 cm Then add that length to the first generation's tail length to find the second generation's tail length: 4 cm + 16 cm =<<TOOL:calculator4+16TOOL>><<OBS20OBS>>20 cm Then find how much longer the third generation's tails are: 25% * 20 cm =<<TOOL:calculator25*.01*20TOOL>><<OBS5OBS>>5 cm Then add that length to the second generation's tail length to find the third generation's tail length: 5 cm + 20 cm =<<TOOL:calculator5+20TOOL>><<OBS25OBS>>25 cm <<TOOL:check_answer25TOOL>><<OBSTrueOBS>>

train_0602

Timmy, Tommy and Tina are filling up a kiddie pool in their backyard. Each has a pail they fill with water from a house before dumping it into the pool. If Timmy's pail holds twice as much water as Tommy's, and Tommy's holds 2 gallons more than Tina's, and Tina's is 4 gallons, how much water do the three of them fill the pool with after 3 trips each?

If Tina's pail holds 4 gallons and Tommy's holds 2 more gallons than hers, that means Tommy's holds 4+2=<<TOOL:calculator4+2TOOL>><<OBS6OBS>>6 gallons. If Timmy's pail holds twice as much as Tommy's 6-gallon pail, that means it holds 6*2=<<TOOL:calculator6*2TOOL>><<OBS12OBS>>12 gallons. Therefore, in 1 trip that means all three move a total of 4+6+12=<<TOOL:calculator4+6+12TOOL>><<OBS22OBS>>22 gallons. In three trips, that means they would move a total of 22*3=<<TOOL:calculator22*3TOOL>><<OBS66OBS>>66 gallons <<TOOL:check_answer66TOOL>><<OBSTrueOBS>>

train_0603

Ben has 20 eggs in the fridge. Yesterday, he ate 4 eggs in the morning and 3 in the afternoon. How many eggs does Ben have now?

Ben ate 4 + 3 =<<TOOL:calculator4+3TOOL>><<OBS7OBS>>7 eggs yesterday. So he will have left 20 - 7 =<<TOOL:calculator20-7TOOL>><<OBS13OBS>>13 eggs. <<TOOL:check_answer13TOOL>><<OBSTrueOBS>>

train_0604

Yesterday Ryan got five books from the library. They were a total of 2100 pages. His brother got one book a day that was 200 pages each. They both finished them in a week. On average, how many more pages per day did Ryan read compared to his brother?

Ryan read an average of 300 pages a day because 2100 / 7 =<<TOOL:calculator2100/7TOOL>><<OBS300OBS>>300 He read 100 more pages a day on average than his brother because 300 - 200 =<<TOOL:calculator300-200TOOL>><<OBS100OBS>>100 <<TOOL:check_answer100TOOL>><<OBSTrueOBS>>

train_0605

On Monday Elisa paints 30 square feet of her house's walls. On Tuesday she paints twice that amount. On Wednesday she finishes up by painting half as many square feet as she painted on Monday. How many square feet total does Elisa paint in her house?

On Monday Elisa paints 30 square feet of wall. She paints 2 x 30 square feet on Tuesday =<<TOOL:calculator2*30TOOL>><<OBS60OBS>>60 square feet of wall. On Wednesday Elisa paints 1/2 as many square feet as she painted on Monday, 1/2 x 30 square feet =<<TOOL:calculator1/2*30TOOL>><<OBS15OBS>>15 square feet of wall. In total, Elisa paints 30 + 60 + 15 =<<TOOL:calculator30+60+15TOOL>><<OBS105OBS>>105 square feet of wall. <<TOOL:check_answer105TOOL>><<OBSTrueOBS>>

train_0606

Nina has two pairs of shoes. She bought one of them for $22, and the second one was 50% more expensive. How much did Nina pay for both pairs of shoes?

The second pair of shoes was 50/100 * 22 = $<<TOOL:calculator50/100*22TOOL>><<OBS11OBS>>11 more expensive. That means that the second pair's price was 22 + 11 = $<<TOOL:calculator22+11TOOL>><<OBS33OBS>>33. So for both pairs of shoes, Nina paid 33 + 22 = $<<TOOL:calculator33+22TOOL>><<OBS55OBS>>55. <<TOOL:check_answer55TOOL>><<OBSTrueOBS>>

train_0607

When you take Hiram's age and then add 12, you get 4 less than twice Allyson's age. If Hiram is 40 years old, how old is Allyson?

If Hiram's age is 40, when you add 12, his age becomes 40+12=<<TOOL:calculator40+12TOOL>><<OBS52OBS>>52 If you add 4 from Hiram's age after adding twelve to his age, you get 52+4 = 56, which is twice Allyson's age. Allyson's age is 56/2 =<<TOOL:calculator56/2TOOL>><<OBS28OBS>>28 years <<TOOL:check_answer28TOOL>><<OBSTrueOBS>>

train_0608

On Black Friday a popular electronics store sells 327 televisions. This is 50 more than they sold last Black Friday. If this sales trend continues and they sell 50 more televisions each year for three years, how many televisions will they sell on Black Friday three years from now?

The electronics store sold 327 televisions this Black Friday and might sell 50 more televisions the next year, for a total of 327 + 50 =<<TOOL:calculator327+50TOOL>><<OBS377OBS>>377 televisions. The second year they might sell 377 + 50 =<<TOOL:calculator377+50TOOL>><<OBS427OBS>>427 televisions. The third year, if they continue to sell 50 more televisions than they did the previous year, they will sell 427 + 50 televisions =<<TOOL:calculator427+50TOOL>><<OBS477OBS>>477 televisions on the Black Friday three years from now. <<TOOL:check_answer477TOOL>><<OBSTrueOBS>>

train_0609

Annie walked 5 blocks from her house to the bus stop. She rode the bus 7 blocks to the coffee shop. Later, she came home the same way. How many blocks did Annie travel in all?

Annie traveled 5 + 7 =<<TOOL:calculator5+7TOOL>><<OBS12OBS>>12 blocks to the coffee shop. Her round trip would take 12 x 2 =<<TOOL:calculator12*2TOOL>><<OBS24OBS>>24 blocks. <<TOOL:check_answer24TOOL>><<OBSTrueOBS>>

train_0610

Sedrach has 13 apple pies. If every apple pie can be quickly divided into halves and every half an apple pie can be split into 5 bite-size samples, how many people can taste Sedrach's apple pie if he divides them all into bite-size samples?

Every apple pie has 5 x 2 =<<TOOL:calculator5*2TOOL>><<OBS10OBS>>10 bite sizes 13 x 10 =<<TOOL:calculator13*10TOOL>><<OBS130OBS>>130 people can taste Sedrach's apple pies <<TOOL:check_answer130TOOL>><<OBSTrueOBS>>

train_0611

From Sunday to Thursday, Prudence sleeps 6 hours a night. Friday and Saturday she sleeps for 9 hours a night. She also takes a 1-hour nap on Saturday and Sunday. How much sleep does she get in 4 weeks?

5 nights a week she sleeps for 6 hours so she sleeps 5*6 =<<TOOL:calculator5*6TOOL>><<OBS30OBS>>30 hours 2 nights a week she sleeps for 9 hours so she sleeps 2*9 =<<TOOL:calculator2*9TOOL>><<OBS18OBS>>18 hours 2 days a week she naps for 1 hour so she sleeps 2*1 =<<TOOL:calculator2*1TOOL>><<OBS2OBS>>2 hours Over 1 week she sleeps 30+18+2 =<<TOOL:calculator30+18+2TOOL>><<OBS50OBS>>50 hours Over 4 weeks she sleeps 4*50 =<<TOOL:calculator4*50TOOL>><<OBS200OBS>>200 hours <<TOOL:check_answer200TOOL>><<OBSTrueOBS>>

train_0612

Kelly needs school supplies to teach her class for an art project. She has 8 students and they will need 3 pieces of construction paper each. In addition to the construction paper, she needs to buy 6 bottles of glue for everyone to share. After Kelly purchases these supplies, she dropped half of them down a storm drain. Class is about to start, but she manages to rush to the store and buy 5 more pieces of construction paper. How many supplies are left?

Kelly needs 8*3=<<TOOL:calculator8*3TOOL>><<OBS24OBS>>24 pieces of construction paper. She buys glue which grows the supplies to 24+6=<<TOOL:calculator24+6TOOL>><<OBS30OBS>>30. Unfortunately, she dropped 30/2=<<TOOL:calculator30/2TOOL>><<OBS15OBS>>15 supplies. Rushing to the store, she buys more construction paper bringing her supplies back to 15+5=<<TOOL:calculator15+5TOOL>><<OBS20OBS>>20. <<TOOL:check_answer20TOOL>><<OBSTrueOBS>>

train_0613

Carl is having a party on Saturday and is inviting 15 guests. He would like to make sure everyone, including himself, has at least 2 glasses of punch. Each glass holds 12 ounces of punch. How many ounces of punch does he need to buy for the party?

Including Carl, there will be 15 + 1 =<<TOOL:calculator15+1TOOL>><<OBS16OBS>>16 people at the party. Carl would like each person to be able to have 2 cups x 12 ounces =<<TOOL:calculator2*12TOOL>><<OBS24OBS>>24 ounces of punch. Carl needs to buy 16 x 24 =<<TOOL:calculator16*24TOOL>><<OBS384OBS>>384 ounces of punch. <<TOOL:check_answer384TOOL>><<OBSTrueOBS>>

train_0614

Santana has 7 brothers. 3 of them have birthdays in March, 1 of them has a birthday in October, 1 has a birthday in November, and another 2 of them were born in December. If Santana always buys each of her brothers a birthday present and a Christmas present, how many more presents does she have to buy in the second half of the year than the first half of the year?

Santana has 1 + 1 + 2 =<<TOOL:calculator1+1+2TOOL>><<OBS4OBS>>4 brothers with birthdays in the second half of the year. She has 7 brothers - 4 brothers =<<TOOL:calculator7-4TOOL>><<OBS3OBS>>3 brothers with birthdays in the first half of the year. Altogether, she has to buy 4 + 7 =<<TOOL:calculator4+7TOOL>><<OBS11OBS>>11 presents in the second half of the year. Therefore, she has to buy 11 - 3 =<<TOOL:calculator11-3TOOL>><<OBS8OBS>>8 more presents in the second half of the year. <<TOOL:check_answer8TOOL>><<OBSTrueOBS>>

train_0615

Mary is trying to get Zoom set up for the first time. She spent 10 minutes downloading the Mac version, only to realize she needed the Windows version, which took three times as long to download. During her first call, the audio glitched twice for 4 minutes each time and the video glitched once for 6 minutes. She spent twice as long talking without glitches as with glitches. How much time did Mary spend downloading Zoom and talking total?

First find the time Mary spent downloading the Windows version: 10 minutes * 3 =<<TOOL:calculator10*3TOOL>><<OBS30OBS>>30 minutes Then find the total time the audio glitches took: 4 minutes/glitch * 2 glitches =<<TOOL:calculator4*2TOOL>><<OBS8OBS>>8 minutes Then add the video glitch time to find the total glitch time: 8 minutes + 6 minutes =<<TOOL:calculator8+6TOOL>><<OBS14OBS>>14 minutes Then double that time to find the total glitch-free time: 14 minutes * 2 =<<TOOL:calculator14*2TOOL>><<OBS28OBS>>28 minutes Then add the talking time to the download time to find the total time: 30 minutes + 10 minutes + 14 minutes + 28 minutes =<<TOOL:calculator30+10+14+28TOOL>><<OBS82OBS>>82 minutes <<TOOL:check_answer82TOOL>><<OBSTrueOBS>>

train_0616

At a certain school, 2/3 of the population are females. One-tenth of the males are foreign students. If the school has 300 students, how many students are non-foreign male students?

There are 300 x 2/3 =<<TOOL:calculator300*2/3TOOL>><<OBS200OBS>>200 females in the school. So, 300 - 200 =<<TOOL:calculator300-200TOOL>><<OBS100OBS>>100 are males. Out of the 100 males, 100 x 1/10 =<<TOOL:calculator100*1/10TOOL>><<OBS10OBS>>10 are male foreign students. Thus, there are 100 - 10 =<<TOOL:calculator100-10TOOL>><<OBS90OBS>>90 non-foreign male students. <<TOOL:check_answer90TOOL>><<OBSTrueOBS>>

train_0617

Billy is counting the rings in two trees. Weather fluctuations in this area mean that each tree's rings are in groups of two fat rings and four thin rings. If Billy counts 70 ring groups in the first tree and 40 ring groups in the second tree, how much older is the first tree? (Trees grow 1 ring per year.)

First find the total number of rings in a ring group: 2 rings + 4 rings =<<TOOL:calculator2+4TOOL>><<OBS6OBS>>6 rings Then subtract the number of ring groups in the second tree from the number in the first tree to find the difference: 70 groups - 40 groups =<<TOOL:calculator70-40TOOL>><<OBS30OBS>>30 groups Then multiply that number by the number of rings in a group to find the difference in the trees' ages: 30 groups * 6 rings/group =<<TOOL:calculator6*30TOOL>><<OBS180OBS>>180 rings, or 180 years <<TOOL:check_answer180TOOL>><<OBSTrueOBS>>

train_0618

A store owner repacked his oils into 200 mL bottles. He was able to make 20 bottles. How many liters of oil did the store owner have?

Twenty bottles of oil is equal to 200 mL x 20 =<<TOOL:calculator20*200TOOL>><<OBS4000OBS>>4000 mL. Since 1 liter is equal to 1000 mL, then the store owner had 4000/1000 =<<TOOL:calculator4000/1000TOOL>><<OBS4OBS>>4 liters of oil. <<TOOL:check_answer4TOOL>><<OBSTrueOBS>>

train_0619

Mara and Riley went to a carnival, Mara rode the bumper car two times, Riley rode the space shuttle four times, and they both rode the Ferris wheel three times. If a ticket for a bumper car cost $2, a ticket for a space shuttle cost $4, and a ticket for a Ferris wheel cost $5, how much money did they spend?

Mara spent $2 x 2 = $<<TOOL:calculator2*2TOOL>><<OBS4OBS>>4 for riding the bumper car two times. Riley spent $4 x 4 = $<<TOOL:calculator4*4TOOL>><<OBS16OBS>>16 for riding the space shuttle 4 times. They spent $5 x 3 = $<<TOOL:calculator5*3TOOL>><<OBS15OBS>>15 each riding the Ferris wheel 3 times. So, they spent a total of $15 x 2= $<<TOOL:calculator15*2TOOL>><<OBS30OBS>>30 riding the Ferris wheel. Therefore the total amount they spent at the carnival is $4 + $16 + $30 = $<<TOOL:calculator4+16+30TOOL>><<OBS50OBS>>50. <<TOOL:check_answer50TOOL>><<OBSTrueOBS>>

train_0620

The file, 90 megabytes in size, downloads at the rate of 5 megabytes per second for its first 60 megabytes, and then 10 megabytes per second thereafter. How long, in seconds, does it take to download entirely?

The first 60 megabytes take 60/5=<<TOOL:calculator60/5TOOL>><<OBS12OBS>>12 seconds. There are 90-60=<<TOOL:calculator90-60TOOL>><<OBS30OBS>>30 remaining megabytes. The remaining 30 megabytes take 30/10=<<TOOL:calculator30/10TOOL>><<OBS3OBS>>3 seconds. And 12+3=<<TOOL:calculator12+3TOOL>><<OBS15OBS>>15 seconds. <<TOOL:check_answer15TOOL>><<OBSTrueOBS>>

train_0621

Jill is going to resod her front yard. The plot of land in front of her house is 200 feet wide by 50 feet. Her house has a sidewalk that is 3 feet wide and 50 feet long. There are also four flower beds: two right in front of the house that are 4 feet deep by 25 feet long, one that is 10 feet by 12 feet, and a fourth that is 7 feet by 8 feet. How many square feet of sod will she need to cover her yard, minus the sidewalk and flower beds?

The area of the whole front yard is 200 feet by 50 feet, or 200 ft * 50 ft =<<TOOL:calculator200*50TOOL>><<OBS10000OBS>>10,000 sq.ft. The sidewalk is 3 feet by 50 feet, or 3ft * 50ft =<<TOOL:calculator3*50TOOL>><<OBS150OBS>>150 sq.ft. Each of the flower beds right in front of the house is 4 feet by 25 feet, or 4 ft * 25 ft = 100 sq.ft. There are two, so that's 2 * 100 sq.ft. = 200 sq.ft. The third flower bed is 10 feet by 12 feet, or 10ft * 12ft =<<TOOL:calculator10*12TOOL>><<OBS120OBS>>120 sq.ft. The fourth flower bed is 7 feet by 8 feet, or 7ft * 8ft =<<TOOL:calculator7*8TOOL>><<OBS56OBS>>56 sq.ft. The total area of the sidewalk and flower beds is 150 sq.ft + 200 sq.ft + 120 sq.ft + 56 sq.ft =<<TOOL:calculator150+200+120+56TOOL>><<OBS526OBS>>526 sq. ft. So Jill will need a total of 10,000 sq.ft - 526 sq.ft =<<TOOL:calculator10000-526TOOL>><<OBS9474OBS>>9,474 sq.ft. of sod. <<TOOL:check_answer9474TOOL>><<OBSTrueOBS>>

train_0622

Tim owns rental properties. He decides to replace all the locks and needs to get 3 keys per lock. He owns two apartment complexes which each have 12 apartments. How many keys does he need to make?

There are 2*12=<<TOOL:calculator2*12TOOL>><<OBS24OBS>>24 apartments he needs keys for So he needs 24*3=<<TOOL:calculator24*3TOOL>><<OBS72OBS>>72 keys <<TOOL:check_answer72TOOL>><<OBSTrueOBS>>

train_0623

Anna has a certain number of phone chargers and five times more laptop chargers than phone chargers. If she has 24 chargers total, how many phone chargers does she have?

Let p be the number of phone chargers Anna has and l be the number of laptop chargers. We know that l = 5p and l + p = 24. Substituting the first equation into the second equation, we get 5p + p = 24 Combining like terms, we get 6p = 24 Dividing both sides of the equation by 6, we get p = 4 <<TOOL:check_answer4TOOL>><<OBSTrueOBS>>

train_0624

Andy is making fudge. First he needs to raise the temperature of the candy mixture from 60 degrees to 240 degrees. Then he needs to cool it down to 170 degrees. If the candy heats at 5 degrees/minute and cools at 7 degrees/minute, how long will it take for the candy to be done (in minutes)?

First find the total number of degrees the candy needs to heat up: 240 degrees - 60 degrees =<<TOOL:calculator240-60TOOL>><<OBS180OBS>>180 degrees Then divide that amount by the rate the candy heats up: 180 degrees / 5 degrees/minute =<<TOOL:calculator180/5TOOL>><<OBS36OBS>>36 minutes Then find the number of degrees the candy needs to cool down: 240 degrees - 170 degrees =<<TOOL:calculator240-170TOOL>><<OBS70OBS>>70 degrees Then divide that by the rate the candy cool down: 70 degrees / 7 degrees/minute =<<TOOL:calculator70/7TOOL>><<OBS10OBS>>10 minutes Then add the time for the candy to heat to the time for it to cool to find the total time: 10 minutes + 36 minutes =<<TOOL:calculator10+36TOOL>><<OBS46OBS>>46 minutes <<TOOL:check_answer46TOOL>><<OBSTrueOBS>>

train_0625

Samson is going to another town which is 140 km away. He will use his car that uses ten liters of gasoline for a distance of 70 km. How many liters of gasoline will Samson need for a one-way trip?

Samson will need 140 km/70 km =<<TOOL:calculator140/70TOOL>><<OBS2OBS>>2 ten liters of gasoline for a one-way trip to a town. Therefore, he will need a total of 2 x 10 liters =<<TOOL:calculator2*10TOOL>><<OBS20OBS>>20 liters of gasoline. <<TOOL:check_answer20TOOL>><<OBSTrueOBS>>

train_0626

Bob buys 50 feet of rope. He uses a 5th of it to make a small piece of art. He takes the rest and gives half of it to the friend. After that, he cuts 2-foot sections. How many sections does he get?

He cuts off 50/5=<<TOOL:calculator50/5TOOL>><<OBS10OBS>>10 feet So he has 50-10=<<TOOL:calculator50-10TOOL>><<OBS40OBS>>40 feet left He gives half away which means he has 40/2=<<TOOL:calculator40/2TOOL>><<OBS20OBS>>20 feet So he has 20/2=<<TOOL:calculator20/2TOOL>><<OBS10OBS>>10 sections <<TOOL:check_answer10TOOL>><<OBSTrueOBS>>

train_0627

Noah’s age is twice Joe’s age. If Joe is 6 years old, how old will Noah be after 10 years?

Noah’s age is 2 * 6 =<<TOOL:calculator2*6TOOL>><<OBS12OBS>>12 years old. After 10 years Noah will be 12 + 10 = 22 years old. <<TOOL:check_answer22TOOL>><<OBSTrueOBS>>

train_0628

Jenna is on a road trip. She drives for 2 hours at 60mph. She takes a bathroom break, and then she continues driving for 3 hours at 50 mph. She can drive for 30 miles on one gallon of gas. If one gallon of gas costs $2, how much money does she spend on gas for her trip?

First she drives 2 hours * 60 mph =<<TOOL:calculator2*60TOOL>><<OBS120OBS>>120 miles Then she drives 3 hours * 50 mph =<<TOOL:calculator3*50TOOL>><<OBS150OBS>>150 miles The total miles driven is 120 + 150 =<<TOOL:calculator120+150TOOL>><<OBS270OBS>>270 miles Jenna uses 270 / 30 =<<TOOL:calculator270/30TOOL>><<OBS9OBS>>9 gallons of gas. The cost of gas is 9 * $2 = $<<TOOL:calculator9*2TOOL>><<OBS18OBS>>18 <<TOOL:check_answer18TOOL>><<OBSTrueOBS>>

train_0629

Gunther can type 160 words every 3 minutes and he works 480 minutes per day. How many words can Gunther type in a working day?

Gunther can type 480 / 3 =<<TOOL:calculator480/3TOOL>><<OBS160OBS>>160 sets of 160 words per 3 minutes. Therefore, he can type 160 x 160 =<<TOOL:calculator160*160TOOL>><<OBS25600OBS>>25,600 words per day. <<TOOL:check_answer25600TOOL>><<OBSTrueOBS>>

train_0630

Boston had .5 feet of snow on the first day of winter. The next day they got an additional 8 inches. Over the next 2 days, 2 inches of the snow melted. On the fifth day, they received another 2 times the amount of snow they received on the first day. How many feet of snow do they now have?

12 inches is 1 foot and they received a .5 foot of snow on the first day so they received 12*.5 =<<TOOL:calculator12*.5TOOL>><<OBS6OBS>>6 inches of snow The first day they had 6 inches and then received another 8 inches for a total of 6+8 =<<TOOL:calculator6+8TOOL>><<OBS14OBS>>14 inches 2 inches melted from their 14 inches so that leaves 14-2 =<<TOOL:calculator14-2TOOL>><<OBS12OBS>>12 inches of snow They received 2 times the amount as the first day's 6 inches of snow so that's 2*6 =<<TOOL:calculator2*6TOOL>><<OBS12OBS>>12 inches of snow So they had 12 inches of snow and received another 12 inches of snow for a total of 12+12 =<<TOOL:calculator12+12TOOL>><<OBS24OBS>>24 inches 12 inches is 1 foot and they have 24 inches of snow so they have 24/12 = 2 feet of snow <<TOOL:check_answer2TOOL>><<OBSTrueOBS>>

train_0631

Yella's computer usage last week was 91 hours. If she plans to use the computer 8 hours a day for this week, how much less ​is her computer usage for this week?

Yella can use the computer 8 x 7 =<<TOOL:calculator8*7TOOL>><<OBS56OBS>>56 hours for this week. Therefore, Yella's computer usage for this week is 91 - 56 =<<TOOL:calculator91-56TOOL>><<OBS35OBS>>35 hours lesser than her computer usage last week. <<TOOL:check_answer35TOOL>><<OBSTrueOBS>>

train_0632

Meadow has a business that sells baby diapers to her local townspeople. She orders 30 boxes of diapers containing 40 packs weekly, with each pack having 160 diapers. She sells each diaper for $5. How much money is Meadow making from selling all her diapers?

When she orders 30 boxes, the total number of packs in the boxes is 30*40 =<<TOOL:calculator30*40TOOL>><<OBS1200OBS>>1200 packs. If a pack has 160 diapers, 1200 packs contain 1200*160 =<<TOOL:calculator1200*160TOOL>><<OBS192000OBS>>192000 diapers. After selling all the diapers, Meadow gets 192000*$5 = $<<TOOL:calculator192000*5TOOL>><<OBS960000OBS>>960000 <<TOOL:check_answer960000TOOL>><<OBSTrueOBS>>

train_0633

A book library charges fifty cents per day on any book borrowed by its members to read outside the library's premises. At the start of May, Celine borrowed three books from the library to read at home for her upcoming examinations. If she returned one book 20 days after borrowing it, and the other two stayed at her house until the end of May, calculate the total amount of money that she paid at the library for lending the three books.

Celine was charged $0.50 * 20 = $<<TOOL:calculator0.50*20TOOL>><<OBS10OBS>>10 for the book she returned to the library after 20 days. If the other two books stayed at her house until the end of May, she paid 31*$0.50= $<<TOOL:calculator31*0.5TOOL>><<OBS15.5OBS>>15.5 for each book. For the two books that stayed at her house until the end of May, Celine paid $15.5*2 = $<<TOOL:calculator15.5*2TOOL>><<OBS31OBS>>31 For the three books, Celine paid $31+10 = $<<TOOL:calculator31+10TOOL>><<OBS41OBS>>41 <<TOOL:check_answer41TOOL>><<OBSTrueOBS>>

train_0634

Nigella is a realtor who earns a base salary of $3,000 a month plus a 2% commission on every house she sells. One month, Nigella sells 3 houses and earns $8,000 total. House B costs three times as much as House A. House C cost twice as much as House A minus $110,000. How much did House A cost?

First figure out how much money Nigella earned from commission by subtracting her base salary from her total earnings: $8,000 - $3,000 = $<<TOOL:calculator8000-3000TOOL>><<OBS5000OBS>>5,000. Next, figure out how much all three houses cost by dividing Nigella's commission money by her commission rate: $5,000 ÷ 0.02 = $<<TOOL:calculator5000/0.02TOOL>><<OBS250000OBS>>250,000. Next, express each house's price in terms of A's price: B = 3A, and C = 2A - $110,000. Now we know that A + 3A + 2A - $110,000 = $250,000. We can combine like terms to find that 6A - $110,000 = $250,000. Now we add $110,000 to both sides of the equation and get 6A = $360,000. We can divide both sides by 6 to find A = $60,000. <<TOOL:check_answer60000TOOL>><<OBSTrueOBS>>

train_0635

Maria wants to paint a picture and needs some tools to do that. She wants to buy a set of brushes for $20 and some canvas for three times more than the brushes. The paint costs Maria $8 per liter, and she needs at least 5 liters. How much money will she earn on the painting if she will be able to sell it for $200?

Maria wants to pay 3 * 20 = $<<TOOL:calculator3*20TOOL>><<OBS60OBS>>60 for the canvas. Maria needs 5 liters of paint, so the cost of it would be 8 * 5 = $<<TOOL:calculator8*5TOOL>><<OBS40OBS>>40. So in total Maria will earn 200 - 40 - 60 - 20 = $<<TOOL:calculator200-40-60-20TOOL>><<OBS80OBS>>80 if she will be able to sell the painting at the mentioned price. <<TOOL:check_answer80TOOL>><<OBSTrueOBS>>

train_0636

A plane takes off at 6:00 a.m. and flies for 4 hours from New York City to Chicago. The plane stays at the port in Chicago for 1 hour and then departs for Miami. If the aircraft took three times as many hours to fly to Miami than it took to fly from New York to Chicago, calculate the total time to travel from New York to Miami.

Before departing for Miami from Chicago, the total time the plane had taken for the journey is 4+1 =<<TOOL:calculator4+1TOOL>><<OBS5OBS>>5 hours. It took 3*4 =<<TOOL:calculator3*4TOOL>><<OBS12OBS>>12 hours to fly to Miami The total flying time from New York to Miami is 12+5 =<<TOOL:calculator12+5TOOL>><<OBS17OBS>>17 hours <<TOOL:check_answer17TOOL>><<OBSTrueOBS>>

train_0637

A movie theatre has 250 seats. The cost of a ticket is $6 for an adult and $4 for a child. The theatre is full and contains 188 children. What is the total ticket revenue for this movie session?

The number of adults present is 250 – 188 =<<TOOL:calculator250-188TOOL>><<OBS62OBS>>62 adults The revenue generated by adults is 62 * 6 = $<<TOOL:calculator62*6TOOL>><<OBS372OBS>>372 The revenue generated by children is 188 * 4 = $<<TOOL:calculator188*4TOOL>><<OBS752OBS>>752 So the total ticket revenue is 372 + 752= $<<TOOL:calculator372+752TOOL>><<OBS1124OBS>>1124 <<TOOL:check_answer1124TOOL>><<OBSTrueOBS>>

train_0638

Tim decides to get animals for his zoo. He buys 3 goats for $400 each. He gets twice as many llamas which cost 50% more each. How much did he spend?

The goats cost 3*400=$<<TOOL:calculator3*400TOOL>><<OBS1200OBS>>1200 He buys 3*2=<<TOOL:calculator3*2TOOL>><<OBS6OBS>>6 llamas Each llama cost 400*1.5=$<<TOOL:calculator400*1.5TOOL>><<OBS600OBS>>600 So he spends 600*6=$<<TOOL:calculator600*6TOOL>><<OBS3600OBS>>3600 on llamas. So the total cost was 1200+3600=$<<TOOL:calculator1200+3600TOOL>><<OBS4800OBS>>4800 <<TOOL:check_answer4800TOOL>><<OBSTrueOBS>>

train_0639

A choir was singing a song that involved 30 singers. In the first verse, only half of them sang. In the second verse, a third of the remaining singers joined in. How many people joined in the final third verse that the whole choir sang together?

In the first verse, 30 / 2 =<<TOOL:calculator30/2TOOL>><<OBS15OBS>>15 singers sang. In the second verse, 15 / 3 =<<TOOL:calculator15/3TOOL>><<OBS5OBS>>5 singers joined in. In the final verse, 30 - 15 - 5 =<<TOOL:calculator30-15-5TOOL>><<OBS10OBS>>10 singers joined for the whole choir to sing together. <<TOOL:check_answer10TOOL>><<OBSTrueOBS>>

train_0640

Rodney, Roger and Ron can lift a combined weight of 239 pounds. Rodney can lift twice as much as Roger, and Roger can lift 7 pounds less than 4 times the amount that Ron can lift. How much can Rodney lift?

Let x represent the amount that Ron can lift. Roger: 4x-7 Rodney:2(4x-7)=8x-14 Total:x+4x-7+8x-14=239 13x-21=239 13x=260 x=<<TOOL:calculator20TOOL>><<OBS20OBS>>20 Rodney:8(20)-14=146 pounds <<TOOL:check_answer146TOOL>><<OBSTrueOBS>>

train_0641

On Tuesday, Liza had $800 in her checking account. On Wednesday, she paid her rent, $450. On Thursday, she deposited her $1500 paycheck. On Friday, she paid her electricity and internet bills which were $117 and $100, respectively. Then on Saturday, she paid her phone bill, $70. How much money is left in Liza's account?

On Wednesday, Liza had $800 - $450 = $<<TOOL:calculator800-450TOOL>><<OBS350OBS>>350 left in her account. After depositing on Thursday, she had $350 + $1500 = $<<TOOL:calculator350+1500TOOL>><<OBS1850OBS>>1850 in her account. On Friday, she paid a total of $117 + $100 = $<<TOOL:calculator117+100TOOL>><<OBS217OBS>>217 for her electricity and internet bills. So, $1850 - $217 = $<<TOOL:calculator1850-217TOOL>><<OBS1633OBS>>1633 was left on her account on Friday. After paying her phone bill, Liza has $1633 - $70 = $<<TOOL:calculator1633-70TOOL>><<OBS1563OBS>>1563 left in her account. <<TOOL:check_answer1563TOOL>><<OBSTrueOBS>>

train_0642

Selena reads a book with 400 pages. Harry reads a book with 20 fewer than half the number of pages Selena's book has. How many pages are in the book of Harry?

Half the number of pages of Selena is 400/2 =<<TOOL:calculator400/2TOOL>><<OBS200OBS>>200. Therefore, Harry's book has 200 - 20 =<<TOOL:calculator200-20TOOL>><<OBS180OBS>>180 pages. <<TOOL:check_answer180TOOL>><<OBSTrueOBS>>

train_0643

Angela has a collection of 24 pieces of rare action figures. She sold off a quarter of them at the pawnshop and gave one-third of the remainder to her daughter. How many does she have left?

One-quarter of 24 action figures is 24*(1/4) =<<TOOL:calculator24*(1/4)TOOL>><<OBS6OBS>>6 She sold off 6 action figures so she has 24-6 =<<TOOL:calculator24-6TOOL>><<OBS18OBS>>18 left One-third of 18 is 18*(1/3) =<<TOOL:calculator18*(1/3)TOOL>><<OBS6OBS>>6 She gave out 6 so she has 18-6 =<<TOOL:calculator18-6TOOL>><<OBS12OBS>>12 left <<TOOL:check_answer12TOOL>><<OBSTrueOBS>>

train_0644

Jessie won 3 times as many athletic awards as his buddy Scott, who won 4 awards. The best athlete at the rival high school won twice as many awards as Jessie. How many awards did the rival win?

Jessie won 3 times the amount of the 4 awards that Scott won so he won 3*4 =<<TOOL:calculator3*4TOOL>><<OBS12OBS>>12 awards The rival athlete won twice the awards as Jessie, who won 12 so he won 2*12 =<<TOOL:calculator2*12TOOL>><<OBS24OBS>>24 awards <<TOOL:check_answer24TOOL>><<OBSTrueOBS>>

train_0645

Emery looks through the drawer where her mom keeps the cookie cutters. There are 6 cookie cutters shaped like triangles, 4 square ones and 2 hexagons. How many sides are there on the cookie cutters in total?

The 6 triangles have 3 sides each, for a total of 6 * 3 =<<TOOL:calculator6*3TOOL>><<OBS18OBS>>18 sides. The 4 squares have 4 sides each, for a total of 4 * 4 =<<TOOL:calculator4*4TOOL>><<OBS16OBS>>16 sides. The 2 hexagons have 6 sides each, for a total of 2 * 6 =<<TOOL:calculator2*6TOOL>><<OBS12OBS>>12 sides. The total numbers of sides is 18 + 16 + 12 =<<TOOL:calculator18+16+12TOOL>><<OBS46OBS>>46 sides. <<TOOL:check_answer46TOOL>><<OBSTrueOBS>>

train_0646

Max can mow the lawn in 40 minutes. If it takes him twice that long to fertilize the lawn, how long will it take him to both mow and fertilize the lawn?

It takes Max 2 * 40 minutes =<<TOOL:calculator2*40TOOL>><<OBS80OBS>>80 minutes to fertilize the lawn. In total, Max takes 80 minutes + 40 minutes =<<TOOL:calculator80+40TOOL>><<OBS120OBS>>120 minutes to both mow and fertilize the lawn. <<TOOL:check_answer120TOOL>><<OBSTrueOBS>>

train_0647

An adult panda can eat 138 pounds of bamboo each day. A baby panda can eat 50 pounds of bamboo a day. How many pounds of bamboo will the pandas eat in a week?

An adult panda will eat 138 pounds of bamboo * 7 days =<<TOOL:calculator138*7TOOL>><<OBS966OBS>>966 pounds. A baby panda will eat 50 pounds * 7 days =<<TOOL:calculator50*7TOOL>><<OBS350OBS>>350 pounds. Total the pandas will eat 966 pounds + 350 =<<TOOL:calculator966+350TOOL>><<OBS1316OBS>>1316 pounds of bamboo. <<TOOL:check_answer1316TOOL>><<OBSTrueOBS>>

train_0648

The distance from Anthony’s apartment to work is 10 miles. How far away is the gym from his apartment if it is 2 miles more than half the distance from his apartment to work?

Half the distance from his apartment to work is 10 miles / 2 =<<TOOL:calculator10/2TOOL>><<OBS5OBS>>5 miles The gym is 2 more miles than this distance so is 2 + 5 =<<TOOL:calculator2+5TOOL>><<OBS7OBS>>7 miles away from his apartment <<TOOL:check_answer7TOOL>><<OBSTrueOBS>>

train_0649

Heather helps her neighbour pick weeds out of her garden. She gets paid 5 cents for every weed she picks. On average, how many seconds can she take to pick a weed if she wants to earn $10 an hour?

In an hour, she needs to earn $10 * 100 cents / $1 =<<TOOL:calculator10*100TOOL>><<OBS1000OBS>>1000 cents. In an hour, she must pick 1000 cents / 5 cents =<<TOOL:calculator1000/5TOOL>><<OBS200OBS>>200 weeds. There are 1hr * (60 minutes / 1 hr) =<<TOOL:calculator1*60TOOL>><<OBS60OBS>>60 minutes in an hour. There are 60 minutes * (60 seconds / 1 minute) =<<TOOL:calculator60*(60/1)TOOL>><<OBS3600OBS>>3600 seconds in an hour. She has 3600 seconds / 200 =<<TOOL:calculator3600/200TOOL>><<OBS18OBS>>18 seconds to pick each weed. <<TOOL:check_answer18TOOL>><<OBSTrueOBS>>

train_0650

John decides to get the vaccine for COVID. He has to wait 20 minutes for the first dose. The second dose has a wait time half as long. How long was the total wait time?

The second dose had a wait time of 20/2=<<TOOL:calculator20/2TOOL>><<OBS10OBS>>10 minutes So the total wait time is 20+10=<<TOOL:calculator20+10TOOL>><<OBS30OBS>>30 minutes <<TOOL:check_answer30TOOL>><<OBSTrueOBS>>

train_0651

There are 4 alligators living on a golf course in Florida. If the number of alligators doubles every six months, how many alligators will there be at the end of a year?

First figure out how many times the alligator population doubles in one year by dividing the number of months in a year by the number of months it takes the population to double: 12 months / 6 months =<<TOOL:calculator12/6TOOL>><<OBS2OBS>>2. The alligator population doubles twice. Now double the alligator population once: 4 alligators * 2 =<<TOOL:calculator4*2TOOL>><<OBS8OBS>>8 alligators Now double it again: 8 alligators * 2 =<<TOOL:calculator8*2TOOL>><<OBS16OBS>>16 alligators <<TOOL:check_answer16TOOL>><<OBSTrueOBS>>

train_0652

Mikaela earns $10 an hour tutoring. For the first month, she tutored for 35 hours and in the second month, she tutored 5 hours more than the first month. She spent 4/5 of her total earnings on her personal needs and saved the rest of the money. How much did she save?

Mikaela spent 35 + 5 =<<TOOL:calculator35+5TOOL>><<OBS40OBS>>40 hours in the second month. So, she tutored a total of 35 + 40 =<<TOOL:calculator35+40TOOL>><<OBS75OBS>>75 hours for the first two months. Thus, her total earning was 75 x $10 = $<<TOOL:calculator75*10TOOL>><<OBS750OBS>>750. And, her total expenses was 4/5 x $750 = $<<TOOL:calculator4/5*750TOOL>><<OBS600OBS>>600. Therefore, she saved an amount of $750 - $600 = $<<TOOL:calculator750-600TOOL>><<OBS150OBS>>150. <<TOOL:check_answer150TOOL>><<OBSTrueOBS>>

train_0653

Mr. Salazar had seven dozen oranges. He reserved 1/4 of it for his friend and was able to sell 3/7 of the remaining yesterday. Today, he saw four rotten oranges. How many oranges are left to be sold today?

Mr. Salazar had 7 x 12 =<<TOOL:calculator7*12TOOL>><<OBS84OBS>>84 oranges. He reserved 84 x 1/4 =<<TOOL:calculator84*1/4TOOL>><<OBS21OBS>>21 oranges for his friend. Ha had 84 - 21 =<<TOOL:calculator84-21TOOL>><<OBS63OBS>>63 oranges to be sold yesterday. But only 63 x 3/7 =<<TOOL:calculator63*3/7TOOL>><<OBS27OBS>>27 oranges were sold yesterday. So, he had 63 - 27 =<<TOOL:calculator63-27TOOL>><<OBS36OBS>>36 oranges left. Since four oranges are rotten, then only 36 - 4 =<<TOOL:calculator36-4TOOL>><<OBS32OBS>>32 oranges are left to be sold today. <<TOOL:check_answer32TOOL>><<OBSTrueOBS>>

train_0654

Alton owns a business. He is currently renting a space that costs $20 per week. If Alton earns $8 per day, how much is his total profit every week?

Alton earns $8 x 7 = $<<TOOL:calculator8*7TOOL>><<OBS56OBS>>56 per week. Therefore, his weekly profit after paying the rent is $56 - $20 = $<<TOOL:calculator56-20TOOL>><<OBS36OBS>>36. <<TOOL:check_answer36TOOL>><<OBSTrueOBS>>

train_0655

Two vampires have come to the sleepy village of Willowton, population 300. Every night, each vampire turns 5 more people into vampires. How many vampires are there after two nights?

First find the number of new vampires after one night: 5 people/vampire * 2 vampires =<<TOOL:calculator5*2TOOL>><<OBS10OBS>>10 people Add that to the starting number of vampires to find the total number of vampires after one night: 10 vampires + 2 vampires =<<TOOL:calculator10+2TOOL>><<OBS12OBS>>12 vampires Then find the number of new vampires on the second night: 5 people/vampire * 12 vampires =<<TOOL:calculator5*12TOOL>><<OBS60OBS>>60 people Add that number to the starting number of vampires on the second night to find the total number of vampires after two nights: 60 vampires + 12 vampires =<<TOOL:calculator60+12TOOL>><<OBS72OBS>>72 vampires <<TOOL:check_answer72TOOL>><<OBSTrueOBS>>

train_0656

Debora has 12 more dresses than Melissa. Melissa has half the number of dresses Emily has. If Emily has 16 dresses, how many dresses do the three of them have in total?

Melissa has 16 / 2 =<<TOOL:calculator16/2TOOL>><<OBS8OBS>>8 dresses. Debora has 8 + 12 =<<TOOL:calculator8+12TOOL>><<OBS20OBS>>20 dresses. In total, they have 16 + 8 + 20 =<<TOOL:calculator16+8+20TOOL>><<OBS44OBS>>44 dresses. <<TOOL:check_answer44TOOL>><<OBSTrueOBS>>

train_0657

Max is planning a vacation for 8 people. The Airbnb rental costs $3200. They also plan on renting a car that will cost $800. If they plan on splitting the costs equally, how much will each person’s share be?

The total cost for the vacation rentals will be $3200 + $800 = $<<TOOL:calculator3200+800TOOL>><<OBS4000OBS>>4000. The cost per person will be $4000 / 8 = $<<TOOL:calculator4000/8TOOL>><<OBS500OBS>>500. <<TOOL:check_answer500TOOL>><<OBSTrueOBS>>

train_0658

A question and answer forum has 200 members. The average number of answers posted by each member on the forum is three times as many as the number of questions asked. If each user posts an average of 3 questions per hour, calculate the total number of questions and answers posted on the forum by its users in a day.

If each user posts an average of 3 questions per hour, the average number of answers posted on the forum is 3 times the number of questions which totals to 3*3 =<<TOOL:calculator3*3TOOL>><<OBS9OBS>>9 answers per hour. In a day, with 24 hours, the average number of questions asked by each member is 24*3 =<<TOOL:calculator24*3TOOL>><<OBS72OBS>>72, If there are 200 users of the forum, the total number of questions asked is 200*72 =<<TOOL:calculator200*72TOOL>><<OBS14400OBS>>14400 questions in a day. At the same time, a member posts an average of 9*24 =<<TOOL:calculator9*24TOOL>><<OBS216OBS>>216 answers in a day. Since there are 200 members who use the forum, the total number of answers posted in the forum in a day is 200*216 =<<TOOL:calculator200*216TOOL>><<OBS43200OBS>>43200. In total, the number of questions and answers posted on the forum is 43200+14400 =<<TOOL:calculator43200+14400TOOL>><<OBS57600OBS>>57600 <<TOOL:check_answer57600TOOL>><<OBSTrueOBS>>

train_0659

James dumps his whole collection of 500 Legos on the floor and starts building a castle out of them. He uses half the pieces before finishing and is told to put the rest away. He puts all of the leftover pieces back in the box they came from, except for 5 missing pieces that he can't find. How many Legos are in the box at the end?

James starts with 500 Legos and uses half of them, leaving 500/2=<<TOOL:calculator500/2TOOL>><<OBS250OBS>>250 Legos unused. He puts those unused Legos away but since he's missing 5 he only puts 250-5=<<TOOL:calculator250-5TOOL>><<OBS245OBS>>245 Legos away. <<TOOL:check_answer245TOOL>><<OBSTrueOBS>>

train_0660

Tim hires two bodyguards. They each charge $20 an hour. He hires them for 8 hour per day. How much does he pay them in a week if he hires them 7 days a week?

It cost him 20*2=$<<TOOL:calculator20*2TOOL>><<OBS40OBS>>40 an hour for both of them That means he pays 40*8=$<<TOOL:calculator40*8TOOL>><<OBS320OBS>>320 a day So he pays 320*7=$<<TOOL:calculator320*7TOOL>><<OBS2240OBS>>2240 a week <<TOOL:check_answer2240TOOL>><<OBSTrueOBS>>

train_0661

Jonas is a book collector. He has so many books he is converting his third bedroom into a library. This room has 400 square feet of space. He plans to put several bookshelves in the room and each bookshelf takes up 80 square feet of space. If he reserves 160 square feet of space to use for a desk and some walking space, how many shelves can he put in the room?

If he reserves 160 sq. ft. of space for a desk and some walking space, then he will have 400-160=<<TOOL:calculator400-160TOOL>><<OBS240OBS>>240 sq. ft. of space remaining. If each bookshelf takes up 80 sq. ft. of space, then 240 sq ft can contain 240/80=<<TOOL:calculator240/80TOOL>><<OBS3OBS>>3 bookshelves. <<TOOL:check_answer3TOOL>><<OBSTrueOBS>>

train_0662

Jack bought 3 books a month at $20 each. He sells them back at the end of the year for $500. How much money did he lose?

He bought 3*20=$<<TOOL:calculator3*20TOOL>><<OBS60OBS>>60 of books a month That means he bought 60*12=$<<TOOL:calculator60*12TOOL>><<OBS720OBS>>720 of books a year So he lost 720-500=$<<TOOL:calculator720-500TOOL>><<OBS220OBS>>220 <<TOOL:check_answer220TOOL>><<OBSTrueOBS>>

train_0663

Wyatt has 10 blue envelopes. He has 4 fewer yellow envelopes than blue envelopes. How many envelopes does Wyatt have in all?

Wyatt has 10 - 4 =<<TOOL:calculator10-4TOOL>><<OBS6OBS>>6 yellow envelopes. The total number of envelopes he has is 10 blue + 6 yellow =<<TOOL:calculator10+6TOOL>><<OBS16OBS>>16 envelopes. <<TOOL:check_answer16TOOL>><<OBSTrueOBS>>

train_0664

Miriam spent 30 minutes doing laundry, 15 minutes cleaning the bathroom, a certain amount of time cleaning her room, and 40 minutes doing homework. If she spent a total of two hours on these tasks, how long, in minutes, did she spend cleaning her room?

There are 30+15+40=<<TOOL:calculator30+15+40TOOL>><<OBS85OBS>>85 minutes accounted for. She spent 2*60=<<TOOL:calculator2*60TOOL>><<OBS120OBS>>120 minutes. She spent 120-85=<<TOOL:calculator120-85TOOL>><<OBS35OBS>>35 minutes cleaning her room. <<TOOL:check_answer35TOOL>><<OBSTrueOBS>>

train_0665

John has a very inefficient toilet that uses 5 gallons of water per flush and his household flushed 15 times per day. He replaced it with a toilet that uses 80% less water per flush. How much water did John save in June?

He used to use 5*15=<<TOOL:calculator5*15TOOL>><<OBS75OBS>>75 gallons of water per day. This means he used 75*30=<<TOOL:calculator75*30TOOL>><<OBS2250OBS>>2250 gallons a month. His new toilet uses 5*.8=<<TOOL:calculator5*.8TOOL>><<OBS4OBS>>4 gallons less water per flush. So, it only uses 5-4=<<TOOL:calculator5-4TOOL>><<OBS1OBS>>1 gallon per flush. That means he uses 1*15=<<TOOL:calculator1*15TOOL>><<OBS15OBS>>15 gallons per day. All in all, it accounts for a total usage of 15*30=<<TOOL:calculator15*30TOOL>><<OBS450OBS>>450 gallons. So, he saved 2250-450=<<TOOL:calculator2250-450TOOL>><<OBS1800OBS>>1800 gallons per month. <<TOOL:check_answer1800TOOL>><<OBSTrueOBS>>

train_0666

A taco truck buys 100 pounds of beef. They use .25 pounds of beef per taco. If they sell each taco for $2 and each taco takes $1.5 to make how much profit did they make if they used all the beef?

They made 100/.25=<<TOOL:calculator100/.25TOOL>><<OBS400OBS>>400 tacos Each taco gives a profit of 2-1.5=$<<TOOL:calculator2-1.5TOOL>><<OBS.5OBS>>.5 So they made a profit of 400*.5=$<<TOOL:calculator400*.5TOOL>><<OBS200OBS>>200 <<TOOL:check_answer200TOOL>><<OBSTrueOBS>>

train_0667

Brittany uses 1/4 ounce of shampoo to wash her hair every other day. She buys shampoo in 14-ounce bottles. How many bottles does she need to get her through a leap year?

A leap year is one day shorter than a regular year, so it is 365 – 1 =<<TOOL:calculator365-1TOOL>><<OBS364OBS>>364 days. Brittany washes her hair every other day, so she will wash it 364 / 2 =<<TOOL:calculator364/2TOOL>><<OBS182OBS>>182 times in a leap year. A bottle of shampoo lasts her 14 / 1 / 4 = 14 * 4 = 56 washes. If she buys 3 bottles, she will only have enough for 56 * 3 =<<TOOL:calculator3*56TOOL>><<OBS168OBS>>168 washes. If she buys 4 bottles, she will have enough for 56 * 4 =<<TOOL:calculator4*56TOOL>><<OBS224OBS>>224 washes. Since 168 < 182 and 224 > 182, Brittany needs 4 bottles of shampoo to get her through a leap year. <<TOOL:check_answer4TOOL>><<OBSTrueOBS>>

train_0668

Kerry is ready to celebrate his birthday and wants to have three cakes with his age in candles on each of them. Candles come in boxes of 12 and cost $2.5 a box. If the candles cost $5, how old is Kerry?

He needed 2 boxes of candles, because 5 / 2.5 =<<TOOL:calculator5/2.5TOOL>><<OBS2OBS>>2 He needed 24 candles because 2 x 12 =<<TOOL:calculator2*12TOOL>><<OBS24OBS>>24 He is 8 because 24 / 3 =<<TOOL:calculator24/3TOOL>><<OBS8OBS>>8 <<TOOL:check_answer8TOOL>><<OBSTrueOBS>>

train_0669

It takes Dawn 2 hours to paint 1 watercolor painting. She was recently commissioned to paint a series of 12 paintings. Dawn will earn $3,600.00 for these 12 paintings. How much money does Dawn make per hour?

It takes her 2 hours to paint 1 picture and she needs to paint 12 pictures so it will take 2*12 =<<TOOL:calculator2*12TOOL>><<OBS24OBS>>24 hours Dawn will make $3,6000.00 for 24 hours of work which means she makes 3600/24 = $150.00 per hour of work <<TOOL:check_answer150TOOL>><<OBSTrueOBS>>

train_0670

Tom was putting hardwood flooring into his living room that measured 16' long and 20' wide. The flooring comes 10 sq ft per box and he has already put down 250 sq ft of flooring. How many more boxes does Tom need to complete the job?

The entire sq ft of the living room is LxW so the room is 16x20 =<<TOOL:calculator16*20TOOL>><<OBS320OBS>>320 sq ft Tom has already put down 250 sq ft so he needs to put down 320-250 = 70 sq ft of flooring The boxes contain 10 sq ft of flooring per box and he needs 70 more sq ft of flooring so he needs 70/10 =<<TOOL:calculator70/10TOOL>><<OBS7OBS>>7 more boxes <<TOOL:check_answer7TOOL>><<OBSTrueOBS>>

train_0671

If a basket is capable of holding 40 fruit altogether, and there are 3 times as many apples as oranges, how many oranges are there?

Since the ratio of apples to oranges is 3:1, that means for every 3 apples there is 1 orange. The size of this group is therefore 3+1=<<TOOL:calculator3+1TOOL>><<OBS4OBS>>4. We then divide this group size into the total amount of fruit the basket is holding at this time, which is 40. This means there are 40/4=<<TOOL:calculator40/4TOOL>><<OBS10OBS>>10 of these groups in total. Since there are 10 of these groups in total, that means there are 10*1=<<TOOL:calculator10*1TOOL>><<OBS10OBS>>10 oranges in the basket. <<TOOL:check_answer10TOOL>><<OBSTrueOBS>>

train_0672

A packet of candy sweets has 30 cherry-flavored sweets, 40 strawberry-flavored sweets, and 50 pineapple-flavored sweets. Aaron eats half of each of the flavored sweets and gives 5 cherry-flavored sweets to his friend. How many sweets are still in the packet of candy?

Aaron eats 1/2*30 sweets + 1/2*40 sweets + 1/2*50 sweets =<<TOOL:calculator1/2*30+1/2*40+1/2*50TOOL>><<OBS60OBS>>60 candy sweets. The packet of candy sweets still has 60 sweets - 5 sweets =<<TOOL:calculator60-5TOOL>><<OBS55OBS>>55 candy sweets. <<TOOL:check_answer55TOOL>><<OBSTrueOBS>>

train_0673

Andy walks 50 meters from his house to school. After school, he comes back to the house and goes to the market. If he walks 140 meters in total, how many meters is the distance between the house and the market?

He walks 50m from home to school and walks 50m again from school to house, so he walks 50m + 50m =<<TOOL:calculator50+50TOOL>><<OBS100OBS>>100 meters If the total distance is 140m, the distance between the house and the market is 140m - 100m =<<TOOL:calculator140-100TOOL>><<OBS40OBS>>40 meters. <<TOOL:check_answer40TOOL>><<OBSTrueOBS>>

train_0674

Quentin, Skylar, and Colten have a total of 383 chickens. Quentin has 25 more than double the chickens that Skylar has. Skylar has 4 less than triple the number of chickens that Colten has. How many chickens does Colten have?

Let x represent the number of chickens that Colten has Skylar:3x-4 Quentin: 25+2(3x-4)=25+6x-8=6x+17 Total:x+3x-4+(6x+17)=383 10x+13=383 10x=370 x=<<TOOL:calculator37TOOL>><<OBS37OBS>>37 chickens <<TOOL:check_answer37TOOL>><<OBSTrueOBS>>

train_0675

Jack and Jill are friends who borrow from each other often. Last week Jack borrowed $1200 from Jill, which he promised to pay back with an interest of 10%. How much will Jack pay back?

The interest on the loan is 0.1*1200=$<<TOOL:calculator0.1*1200TOOL>><<OBS120OBS>>120 The total amount Jack needs to pay back is 1200+120=<<TOOL:calculator1200+120TOOL>><<OBS1320OBS>>1320 <<TOOL:check_answer1320TOOL>><<OBSTrueOBS>>

train_0676

Chrystal’s vehicle speed is 30 miles per hour. Ascending the mountain decreases its speed by fifty percent, and descending the mountain increases its speed by twenty percent. If the distance going to the top of the mountain is 60 miles and the distance going down to the foot of the mountain is 72 miles, how many hours will Crystal have to pass the whole mountain?

The vehicle's speed decreases to 30 x 0.50 =<<TOOL:calculator30*0.50TOOL>><<OBS15OBS>>15 miles per hour when ascending to the top of the mountain. So, the total time Crystal will have to spend going to the top of the mountain is 60 / 15 =<<TOOL:calculator60/15TOOL>><<OBS4OBS>>4 hours. And the speed of the vehicle increases by 30 x 0.20 =<<TOOL:calculator30*0.20TOOL>><<OBS6OBS>>6 miles per hour when going down to the foot of the mountain. So, the total speed of the vehicle when going down is 30 + 6 =<<TOOL:calculator30+6TOOL>><<OBS36OBS>>36 miles per hour. Thus, Chrystal will have to spend 72 / 36 =<<TOOL:calculator72/36TOOL>><<OBS2OBS>>2 hours to descend from the mountain. Therefore, the total hours she will spend to pass the whole mountain is 4 + 2 =<<TOOL:calculator4+2TOOL>><<OBS6OBS>>6 hours. <<TOOL:check_answer6TOOL>><<OBSTrueOBS>>

train_0677

Grandpa Lou enjoys watching movies on the Hallmark channel, where every movie lasts 90 minutes. If, on Tuesday, he watched several full-length movies on the Hallmark channel for a total of 4 hours and 30 minutes, and then on Wednesday he watched on the same channel twice as many movies as he did on Tuesday. What is the maximum number of full-length movies Grandpa could have watched during these two days?

4 hours and 30 minutes is the same as 4*60+30=<<TOOL:calculator4*60+30TOOL>><<OBS270OBS>>270 minutes. At 90 minutes per movie, Grandpa could watch a total of 270/90=<<TOOL:calculator270/90TOOL>><<OBS3OBS>>3 entire movies in 4 hours and 30 minutes. On Wednesday, he watched 2*3=<<TOOL:calculator2*3TOOL>><<OBS6OBS>>6 movies. Thus, during these two days, he could have watched as many as 3+6=<<TOOL:calculator3+6TOOL>><<OBS9OBS>>9 movies. <<TOOL:check_answer9TOOL>><<OBSTrueOBS>>

train_0678

Nate is reading a 400-page book. He finished reading 20% of the book. How many pages does he need to read to finish the book?

Nate had read 400 x 20/100 =<<TOOL:calculator400*20/100TOOL>><<OBS80OBS>>80 pages. So, he still needs to read 400 - 80 =<<TOOL:calculator400-80TOOL>><<OBS320OBS>>320 pages to finish the book. <<TOOL:check_answer320TOOL>><<OBSTrueOBS>>

train_0679

Harper has 15 rubber bands. His brother has 6 fewer rubber bands than he has. How many rubber bands do they have together?

His brother has 15 rubber bands - 6 rubber bands =<<TOOL:calculator15-6TOOL>><<OBS9OBS>>9 rubber bands. They have 15 rubber bands + 9 rubber bands =<<TOOL:calculator15+9TOOL>><<OBS24OBS>>24 rubber bands together. <<TOOL:check_answer24TOOL>><<OBSTrueOBS>>

train_0680

A movie ticket for an adult costs $8, and a child's ticket costs $3. One adult is taking a group of children to the movies. She has $35. How many children can she take with her to the movies?

Let X be the number of children the adult can take with her. She has $35, so she could buy one ticket for her and the rest for the children. So she has $35 - $8 = $<<TOOL:calculator35-8TOOL>><<OBS27OBS>>27 left for children. She could take $27 / $3/child =<<TOOL:calculator27/3TOOL>><<OBS9OBS>>9 children with her. <<TOOL:check_answer9TOOL>><<OBSTrueOBS>>

train_0681

Carla adds a can of chilis, two cans of beans, and 50% more tomatoes than beans to a normal batch of chili. If she makes a quadruple batch, how many cans of food does she need?

First find the number of cans of tomatoes in a normal batch of chili: 2 cans * 150% =<<TOOL:calculator2*150*.01TOOL>><<OBS3OBS>>3 cans Then add the number of cans of each type of food to find the total number of cans per batch: 3 cans + 2 cans + 1 can =<<TOOL:calculator3+2+1TOOL>><<OBS6OBS>>6 cans Then multiply the number of cans per batch by the number of batches to find the total number of cans: 6 cans/batch * 4 batches =<<TOOL:calculator6*4TOOL>><<OBS24OBS>>24 cans <<TOOL:check_answer24TOOL>><<OBSTrueOBS>>

train_0682

Tim decides to run a campaign for governor. He gets the maximum $1200 donation from 500 people, and three times as many people donated half this sum of money to his campaign. These donations together accounted for 40% of the total money that Tim raised. How much total money did he raise?

He got 1200*500=$<<TOOL:calculator1200*500TOOL>><<OBS600000OBS>>600,000 from maxed donors The smaller donors donated 1200/2=$<<TOOL:calculator1200/2TOOL>><<OBS600OBS>>600 He had 500*3=<<TOOL:calculator500*3TOOL>><<OBS1500OBS>>1500 of these donors So they donated 1500*600=$<<TOOL:calculator1500*600TOOL>><<OBS900000OBS>>900,000 So large donations where worth 900,000+600,000=$<<TOOL:calculator900000+600000TOOL>><<OBS1500000OBS>>1,500,000 So he raised 1,500,000/.4=$<<TOOL:calculator1500000/.4TOOL>><<OBS3750000OBS>>3750000 <<TOOL:check_answer3750000TOOL>><<OBSTrueOBS>>

train_0683

A family went out to see a movie. The regular ticket costs $9 and the ticket for children is $2 less. They gave the cashier two $20 bills and they received a $1 change. How many children are there if there are 2 adults in the family?

They gave the cashier $20 x 2 = $<<TOOL:calculator20*2TOOL>><<OBS40OBS>>40. Since a $1 change was returned, this means the tickets cost $40 - $1 = $<<TOOL:calculator40-1TOOL>><<OBS39OBS>>39. Two adult tickets cost $9 x 2 = $<<TOOL:calculator9*2TOOL>><<OBS18OBS>>18. So, $39 - $18 = $<<TOOL:calculator39-18TOOL>><<OBS21OBS>>21 was spent for the children's tickets. Each child's ticket costs $9 - $2 = $<<TOOL:calculator9-2TOOL>><<OBS7OBS>>7. Therefore, there are $21/$7 =<<TOOL:calculator21/7TOOL>><<OBS3OBS>>3 children. <<TOOL:check_answer3TOOL>><<OBSTrueOBS>>

train_0684

Alexandra bought 8 magazines at the bookstore on Friday. On Saturday, she went back and bought 12 more. Sunday morning, she saw that the store was having a sale and she bought four times the number of magazines she did on Friday. Later that day she discovered that her dog had chewed up 4 of the magazines. How many magazines does she have now?

By adding Friday and Saturday, Alexandra bought 12+8=<<TOOL:calculator12+8TOOL>><<OBS20OBS>>20 magazines On Sunday she buys 8*4=<<TOOL:calculator8*4TOOL>><<OBS32OBS>>32 magazines Before her dog got to them she had 12+8+32=<<TOOL:calculator12+8+32TOOL>><<OBS52OBS>>52 magazines After her dog chewed up some she had 52-4=<<TOOL:calculator52-4TOOL>><<OBS48OBS>>48 magazines <<TOOL:check_answer48TOOL>><<OBSTrueOBS>>

train_0685

Jake earns thrice what Jacob does. If Jacob earns $6 per hour, how much does Jake earn in 5 days working 8 hours a day?

Jake earns $6 * 3 = $<<TOOL:calculator6*3TOOL>><<OBS18OBS>>18 per hour. Working, 8 hour in a day, he earns $18 * 8 = $<<TOOL:calculator8*18TOOL>><<OBS144OBS>>144. So in 5 days, Jake earns $144 x 5 = $<<TOOL:calculator144*5TOOL>><<OBS720OBS>>720. <<TOOL:check_answer720TOOL>><<OBSTrueOBS>>

train_0686

A pair of dogs are barking back and forth at each other from across the street. The poodle barks twice for every one time the terrier barks. The terrier’s owner hushes it every second time it barks. She has to say “hush” six times before the dogs stopped barking. How many times did the poodle bark?

The terrier barked twice as many times as it was told to hush, so it barked 6 * 2 =<<TOOL:calculator6*2TOOL>><<OBS12OBS>>12 times. The poodle barked two times for every terrier bark, so it barked 12 * 2 =<<TOOL:calculator12*2TOOL>><<OBS24OBS>>24 times. <<TOOL:check_answer24TOOL>><<OBSTrueOBS>>

train_0687

Oliver has 10 $20 and 3 $5 bills. William has 15 $10 and 4 $5 bills. How much more money does Oliver have than William?

Oliver's $20 bills amount to $20 x 10 = $<<TOOL:calculator20*10TOOL>><<OBS200OBS>>200. Oliver's $5 bills amount to $5 x 3 = $<<TOOL:calculator5*3TOOL>><<OBS15OBS>>15. So, Oliver has a total of $200 + $15 = $<<TOOL:calculator200+15TOOL>><<OBS215OBS>>215. William's $10 bills amount to $10 x 15 = $<<TOOL:calculator10*15TOOL>><<OBS150OBS>>150. William's $5 bills amount to $5 x 4 = $<<TOOL:calculator5*4TOOL>><<OBS20OBS>>20. So, William has a total of $150 + $20 = $<<TOOL:calculator150+20TOOL>><<OBS170OBS>>170. Therefore, Oliver has $215 - $170 = $<<TOOL:calculator215-170TOOL>><<OBS45OBS>>45 more than William. <<TOOL:check_answer45TOOL>><<OBSTrueOBS>>

train_0688

A YouTube video is 100 hours long. Lila decides to watch it at two times the average speed. Roger, her friend, also watch the same video at the average speed. If they both watched six of the same videos, what's the total number of hours they watched?

When Lila watches the video at twice the normal speed, the video takes 100/2 =<<TOOL:calculator100/2TOOL>><<OBS50OBS>>50 hours. When she watches six such videos, the total number of video hours becomes 50*6 =<<TOOL:calculator50*6TOOL>><<OBS300OBS>>300 hours. Roger, her friend, watches 6 videos at the normal speed, which is 6*100 =<<TOOL:calculator6*100TOOL>><<OBS600OBS>>600 video hours. The total number of hours watched by the two is 600+300 =<<TOOL:calculator600+300TOOL>><<OBS900OBS>>900 hours. <<TOOL:check_answer900TOOL>><<OBSTrueOBS>>

train_0689

Jim ran 16 miles in 2 hours while Frank ran 20 miles in 2 hours. How many more miles did Frank run than Jim in an hour?

Jim ran 16 / 2 =<<TOOL:calculator16/2TOOL>><<OBS8OBS>>8 miles for an hour. Frank ran 20 / 2 =<<TOOL:calculator20/2TOOL>><<OBS10OBS>>10 miles for an hour. Frank ran 10 - 8 =<<TOOL:calculator10-8TOOL>><<OBS2OBS>>2 more miles than Jim in an hour. <<TOOL:check_answer2TOOL>><<OBSTrueOBS>>

train_0690

A guy goes to the tool shop and buys 5 sets of drill bits. Each set cost 6 dollars. He then pays 10% tax on the order. What was the total amount he paid?

The drill bits cost 5*6=$<<TOOL:calculator5*6TOOL>><<OBS30OBS>>30 The tax came out to 30*.1=$<<TOOL:calculator30*.1TOOL>><<OBS3OBS>>3 So the total cost was 30+3=$<<TOOL:calculator30+3TOOL>><<OBS33OBS>>33 <<TOOL:check_answer33TOOL>><<OBSTrueOBS>>

train_0691

Shelby had $20 to take to the book fair. She bought one book for $8 and another for $4. She decided to buy as many $4 posters as she could with the money she had left. How many posters can she buy?

She spent $8 + $4 = $<<TOOL:calculator8+4TOOL>><<OBS12OBS>>12 on books. She started with $20, so she has $20 - $12 = $<<TOOL:calculator20-12TOOL>><<OBS8OBS>>8 left to spend on posters. Each poster costs $4, so she can buy $8 / $4 =<<TOOL:calculator8/4TOOL>><<OBS2OBS>>2 posters. <<TOOL:check_answer2TOOL>><<OBSTrueOBS>>

train_0692

A car manufacturing company that produces 100 cars per month wants to increase its production to reach 1800 cars per year. How many cars should the company add to the monthly production rate to reach that target?

Let Y be the number of cars needed to be added to the current monthly production. Then ((100 + Y) * 12) = 1800. So 1200 + 12 * Y = 1800. 12 * Y = 1800 - 1200 = 600 Y = 600 / 12 =<<TOOL:calculator600/12TOOL>><<OBS50OBS>>50 <<TOOL:check_answer50TOOL>><<OBSTrueOBS>>

train_0693

Lois has 40 books. She gives a fourth of her books to her nephew. From her remaining books, she donates a third of her books to the library. Then she purchases 3 new books from the book store. How many books does Lois have now?

Lois gives 40 / 4 =<<TOOL:calculator40/4TOOL>><<OBS10OBS>>10 books to her nephew Then Lois has 40 - 10 =<<TOOL:calculator40-10TOOL>><<OBS30OBS>>30 books Lois donates 30 / 3 =<<TOOL:calculator30/3TOOL>><<OBS10OBS>>10 books to the library Then Lois has 30 - 10 =<<TOOL:calculator30-10TOOL>><<OBS20OBS>>20 books After purchasing new books, Lois has 20 + 3 =<<TOOL:calculator20+3TOOL>><<OBS23OBS>>23 books <<TOOL:check_answer23TOOL>><<OBSTrueOBS>>

train_0694

Alexa has a lemonade stand where she sells lemonade for $2 for one cup. If she spent $20 on ingredients, how many cups of lemonade does she need to sell to make a profit of $80?

To make a profit of $80, she needs to make $80 + $20 = $<<TOOL:calculator80+20TOOL>><<OBS100OBS>>100 She needs to sell $100 / $2 =<<TOOL:calculator100/2TOOL>><<OBS50OBS>>50 cups of lemonade <<TOOL:check_answer50TOOL>><<OBSTrueOBS>>

train_0695

School coaches bought sports equipment. Coach A bought ten new basketballs for $29 each, while coach B bought 14 new baseballs for $2.50 each and a baseball bat for $18. How much more did coach A spend than coach B?

Coach A spent $29x 10=$<<TOOL:calculator29*10TOOL>><<OBS290OBS>>290 for the 10 basketballs. Coach B spent $2.50x14=$<<TOOL:calculator2.5*14TOOL>><<OBS35OBS>>35 for the 14 baseballs. So, Coach B spent a total of $35+$18=$<<TOOL:calculator35+18TOOL>><<OBS53OBS>>53 for the baseballs and a bat. Thus, Coach A spent $290-$53=$<<TOOL:calculator290-53TOOL>><<OBS237OBS>>237 more than coach B <<TOOL:check_answer237TOOL>><<OBSTrueOBS>>

train_0696

Each member of Greg’s softball team needs to buy one uniform made up of a shirt, a pair of pants, and socks. A shirt costs $7.50, a pair of pants cost $15, and socks cost $4.50 each if each team member buys the uniform items on their own. If they buy the items as a group, they are given a discount. A discounted shirt cost $6.75, a discounted pair of pants cost $13.50, and discounted socks cost $3.75. How much would their team of 12 save with the group discount?

The cost of a regularly-priced uniform is $7.50 for the shirt + $15 for pants + $4.50 for socks = $<<TOOL:calculator7.5+15+4.5TOOL>><<OBS27OBS>>27. The cost of a discounted uniform is $6.75 for the shirt + $13.50 for pants + $3.75 for socks = $<<TOOL:calculator6.75+13.5+3.75TOOL>><<OBS24OBS>>24. By purchasing the discounted uniform, each team member would save $27 for full price - $24 for discounted= $<<TOOL:calculator27-24TOOL>><<OBS3OBS>>3. So, for the team of 12, they would save $3 * 12 = $<<TOOL:calculator3*12TOOL>><<OBS36OBS>>36 <<TOOL:check_answer36TOOL>><<OBSTrueOBS>>

train_0697

Elsie has a specific amount of wet wipes in a container in the morning. Throughout the day, she refills the container with 10 more wipes after using up 20. By nighttime, she only has 60 wipes left. How many wipes were in the container in the morning?

Let w be the number of wet wipes Elsie had in the morning. Throughout the day, she used w-20 wet wipes. Once that happened, she had to refill the container resulting in w-20+10 = w<<TOOL:calculator-20+10TOOL>><<OBS-10OBS>>-10 wet wipes. By nighttime, she had w-10=60 wipes. So then, w=60+10=<<TOOL:calculator60+10TOOL>><<OBS70OBS>>70. She started with w=<<TOOL:calculator70TOOL>><<OBS70OBS>>70 wipes. <<TOOL:check_answer70TOOL>><<OBSTrueOBS>>

train_0698

Kendra tracks the different species of birds they spot on their birdwatching trip. On Monday they visited 5 sites and saw an average of 7 birds at each site. On Tuesday, Kendra visited 5 sites and saw an average of 5 birds at each site. On Wednesday visited 10 sites and saw an average of 8 birds at each site. On average, how many different birds did Kendra see on each site?

On Monday Kendra saw 5 sites x 7 birds/site =<<TOOL:calculator5*7TOOL>><<OBS35OBS>>35 different birds On Tuesday Kendra saw 5 sites x 5 birds/site =<<TOOL:calculator5*5TOOL>><<OBS25OBS>>25 different birds On Wednesday Kendra saw 10 sites x 8 birds/site =<<TOOL:calculator10*8TOOL>><<OBS80OBS>>80 different birds In total Kendra saw 35 birds + 25 birds + 80 birds =<<TOOL:calculator35+25+80TOOL>><<OBS140OBS>>140 different birds In total Kendra visited 5 sites + 5 sites + 10 sites =<<TOOL:calculator5+5+10TOOL>><<OBS20OBS>>20 sites. On average Kendra saw 140 birds / 20 sites =<<TOOL:calculator140/20TOOL>><<OBS7OBS>>7 different birds at each site <<TOOL:check_answer7TOOL>><<OBSTrueOBS>>

train_0699