Reasoning and answer: There will be $1000 x 3 / 10 = $300 worth of money that will be changed into $50 bills. Uncle Bradley will have $300 / $50 = 6 pieces of $50 bills. He will change $1000 - $300 = $700 worth of money into $100 bills. So there will be $700 / $100 = 7 pieces of $100 bills. Thus, there will be a total of 6 + 7 = 13 pieces of $50 and $100 bills in all.
The answer: 13
What was the question?
Question: Uncle Bradley has a $1000 bill that he wants to change into smaller bills so he could give them to his nieces and nephews. He wants to change 3/10 of the money into $50 bills while the rest into $100 bills. How many pieces of bills will Uncle Bradley have in all?


He gave away 100 * .2 = $20. So he kept 100 - 20 = $80.
The answer: 80
Reverse engineering the question: Tim won a $100 raffle. He gave away 20% to his friend. How much did he keep?


Reasoning and answer: The total tons of sand donated to City A and City C is 16 1 / 2 + 24 1 / 2 = 41. The total tons of sand donated to City A, City B, and City C is 41 + 26 = 67. Therefore, City D received 95 - 67 = 28 tons of sand.
The answer: 28
What was the question?
Question: The government donated tons of sand to four Cities. City A received 16 1/2 tons of sand, City B received 26 tons of sand, and City C received 24 1/2 tons of sand. The supplier lost the data for City D; however, they know the total for all four cities was 95 tons. How many tons of sand did City D receive?


Alexander spends 5 * $1 = $5 on apples. He spends 2 * $2 = $4 on oranges. In total, he spends $5 + $4 = $9.
The answer: 9
Reverse engineering the question: Alexander is going food shopping. If he buys 5 apples for $1 each and 2 oranges for $2 each, how much does he spend?


Reasoning and answer: She walks .5 miles to school and back 4 times a day so that's .5 * 4 = 2 miles. She walks 2 miles a day for 5 days so that's 2 * 5 = 10 miles. Over 4 weeks of walking 10 miles per week she walks 4 * 10 = 40 miles.
The answer: 40
What was the question?
Question: Wanda walks her daughter .5 miles to school in the morning and then walks .5 miles home. She repeats this when she meets her daughter after school in the afternoon. They walk to school 5 days a week. How many miles does Wanda walk after 4 weeks?


Reasoning and answer: Santino has 2 * 10 = 20 papaya fruits. Santino has 3 * 20 = 60 mango fruits. In total, Santino has 20 + 60 = 80 fruits.
The answer: 80
What was the question?
Question:
Santino has 2 papaya trees and 3 mango trees. If each papaya tree produces 10 papayas and each mango tree produces 20 mangos, how many fruits does Santino have in total?