Reasoning and answer: First find the total time Carly practices the butterfly stroke in a week: 3 hours / day * 4 days / week = 12 hours / week. Then find the total time Carly practices the backstroke stroke in a week: 2 hours / day * 6 days / week = 12 hours / week. Then add those two amounts of time to find her total practice time each week: 12 hours / week + 12 hours / week = 24 hours / week. Then multiply her weekly practice time by the number of weeks in a month to find her monthly practice time: 24 hours / week * 4 weeks / month = 96 hours / month.
The answer: 96
What was the question?
Question: Carly practices her butterfly stroke for 3 hours a day, 4 days a week, and her backstroke for 2 hours a day, six days a week. How much time does she spend practicing swimming in a month with 4 weeks?


Three dimes is equal to $.3 because 3 x .1 = .3. Seven nickels is equal to $.35 because 7 x .05 = .35. Each time he trades with dimes he lose $.05 because .3 - .25 = .05. Each time he traded with nickels he lost $.1 because .35 - .25 = .1. He lost $1 from trading with dimes because 20 x .05 = 1. He lost $2 from trading with nickels because 20 x .1 = 2. He lost $3 total because 1 + 2 = 3.
The answer: 3
Reverse engineering the question: Mac loves the shape of quarters and is willing to trade money for them, even if he loses value. He tells his brother that he will trade him 3 dimes for a quarter or 7 nickels. He trades for 20 quarters with dimes and 20 quarters with nickels. How many dollars did Mac lose?


Reasoning and answer: Jessica is 26 + 6 = 32 years old. James is 32 + 7 = 39 years old. After 5 years, James will become 39 + 5 = 44 years old.
The answer: 44
What was the question?
Question: Justin is 26 years old. When he was born his elder sister Jessica was 6 years old. James is their elder brother and is 7 years older than Jessica. How old will James be after 5 years?


Three bracelets cost 3 x $15 = $45. Two gold necklaces cost 2 x $10 = $20. Thus, the total amount is $45 + $20 + $20 = $85. Therefore, Raine gets a change of $100 - $85 = $15.
The answer: 15
Reverse engineering the question: A gift shop sells bracelets at $15 each, a gold heart necklace at $10, and a personalized coffee mug at $20. Raine buys three bracelets, two gold heart necklaces, and one coffee mug for her friends. How much change does Raine get back if she gives a one hundred dollar bill?


Reasoning and answer: On Tuesday, 227 books were taken, so there are 235 - 227 = 8 books left. 56 books were brought back on Thursday, so there are 8 + 56 = 64 books in the library. Finally, 35 books are taken out on Friday, leaving 64 - 35 = 29 books available.
The answer: 29
What was the question?
Question: There are 235 books in a library. On Tuesday, 227 books are taken out. On Thursday, 56 books are brought back and 35 books are taken out again on Friday. How many books are there now?


Reasoning and answer: Megan gives Emily 6 * 2 = 12 marbles. Emily then has 6 + 12 = 18 marbles. Emily gives Megan 18 / 2 + 1 = 10 marbles. Emily has 18 - 10 = 8 marbles now.
The answer: 8
What was the question?
Question:
Emily has 6 marbles. Megan gives Emily double the number she has. Emily then gives Megan back half of her new total plus 1. How many marbles does Emily have now?