Reasoning and answer: 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
What was the question?
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: If Audrey was asleep for 10 hours last night and dreamed for 2 / 5 of the time, she dreamed for 2 / 5 * 10 = 4 hours. The total time Audrey slept without dreaming is 10 - 4 = 6 hours.
The answer: 6
What was the question?
Question: Audrey was asleep for 10 hours last night and dreamed for 2/5 of the time. How much of the night was she not dreaming?

Reasoning and answer: There are 8 total dice because 4 plus 4 equals 8. There are 48 sides because 8 times six equals 48.
The answer: 48
What was the question?
Question:
Tom and Tim both brought 4, six-sided dice to school. How many total sides are there?