Reasoning and answer: Thomas has been saving for six years, and since each year has 12 months, he has been making savings for 6 * 12 = 72 months. Since Thomas has been saving $40 in the bank every month for six years, he has saved 72 * $40 = $2880. Joseph has been saving 2 / 5 times less money per month than Thomas, meaning he has been saving 2 / 5 * $40 = $16 less per month. The total amount of money that Joseph has been saving per month is $40 - $16 = $24. In six years, Joseph has saved $24 * 72 = $1728. Together, they have saved a total of $2880 + $1728 = $4608.
The answer: 4608
What was the question?
Question: Thomas has been saving $40 in the bank every month for six years. His friend Joseph has been saving 2/5 times less money per month. How much money are they having in their savings account altogether?


They sold 221 regular size rubber ducks at $3.00 each so they made 221 * 3 = $663.00. They sold 185 large rubber ducks at $5.00 each so they made 185 * 5 = $925.00. The regular size ducks brought in $663.00 and the large brought in $925.00 for a total of 663 + 925 = $1,588.00 for charity.
The answer: 1588
Reverse engineering the question: The city is holding its annual rubber duck race for charity. The regular size rubber ducks are $3.00 each and the large size rubber duck is $5.00 each. All of the rubber ducks will be dropped into the river at the same time and the first duck that floats across the finish line wins. They sold 221 regular size ducks and 185 large size ducks. How much money did the city raise for charity?


Reasoning and answer: Each turn Barry takes standing on his head lasts for 10 + 5 = 15 minutes. 2 hours is 60 * 2 = 120 minutes. Barry can take 120 / 15 = 8 turns standing on his head over two hours.
The answer: 8
What was the question?
Question: Barry stands on his head for 10 minutes at a time, but then he must sit for 5 minutes before he can take another turn standing on his head. How many turns can Barry take standing on his head during a single 2-hour period?


His purchase cost is 4 acres * $1863 = $7452. He divided the land into 9 plots, so the price per lot would be $7452 / 9 = $828.
The answer: 828
Reverse engineering the question: A developer was buying land. He bought 4 acres at $1,863 per acre. He then split the land he purchased into 9 lots. How much should he sell each lot for just to break even?


Reasoning and answer: Lisa drinks 80 * 3 = 240 mg of caffeine in 3 cups of coffee. She wanted to have 200, so she is 40 mg over her goal because 240 - 200 = 40mg.
The answer: 40
What was the question?
Question: There is 80 mg of caffeine in a cup of coffee. Lisa does not want to drink more than 200 mg of caffeine per day. If she drinks three cups of coffee, how many milligrams of coffee did Lisa drink over her goal?


Reasoning and answer: Mary gives away 26 / 2 = 13 blue shirts. Mary gives away 36 / 3 = 12 brown shirts. Mary has 26 - 13 = 13 blue shirts left. Mary has 36 - 12 = 24 brown shirts left. Mary has 13 + 24 = 37 shirts left.
The answer: 37
What was the question?
Question:
Mary has 26 blue shirts and 36 brown shirts. If she gives away half of her blue shirts and a third of her brown shirts, how many shirts does she have left?