Reasoning and answer: Black Copper Marans: 100(.20) = 20. BCM Hens:20(.80) = 16.
The answer: 16
What was the question?
Question: A farm has 100 chickens. 20 percent are Black Copper Marans, and 80 percent of the Black Copper Marans are hens. How many BCM hens are there?


Cindi bought 30 / 0.50 = 60 pencils. Marcia bought 2 * 60 = 120 pencils. Donna bought 3 * 120 = 360 pencils. Altogether, Donna and Marcia bought 120 + 360 = 480 pencils.
The answer: 480
Reverse engineering the question: Donna bought 3 times as many pencils as Marcia did. Marcia bought double the number of pencils as Cindi did. How many pencils did Donna and Marcia buy altogether if Cindi spent $30 on $0.50 pencils?


Reasoning and answer: In the first week, Jed has 20 + 6 = 26 cards. In the second week, he has 26 + 6 = 32 cards. But he is left with 32 - 2 = 30 cards on the 2nd week after giving 2 cards to his friend. Then Jed has 30 + 6 = 36 cards on the 3rd week. He has 36 + 6 = 42 cards on the 4th week. After giving his friend 2 cards, he is then left with 42 - 2 = 40 cards on the 4th week. Hence, Jed will have a total of 40 cards in 4 weeks.
The answer: 4
What was the question?
Question: Jed collects stamp cards. Every week, he gets 6 cards. But every two weeks, he gives 2 cards to his friends. If Jed started with 20 cards, after how many weeks will he have a total of 40 cards?


Esperanza pays 3 / 5 * $600 = $360 on food. She also spends 3 * $360 = $1080 on mortgage bills. Her expenses in taxes amount to 2 / 5 * $2000 = $800. Esperanza's total monthly expenses are $800 on taxes + $1080 on mortgage bills + $360 on food + $600 on rent = $2840. Her gross salary is $2840 for expenses + $2000 on savings = $4840.
The answer: 4840
Reverse engineering the question: On a monthly basis, Esperanza pays $600 in rent, 3/5 as much money on food as she pays on rent and her mortgage bill costs three times the amount of money she spends on food. If she saves $2000 and also pays the equivalent of 2/5 of her savings in taxes, calculate her gross monthly salary.


Reasoning and answer: A vendor bought each apple for $3 / 2 = $1.50. He will sell each apple at $10 / 5 = $2 each. His profit for each apple is $2 - $1.50 = $0.50. His total profit for 5 apples is $0.50 x 5 = $2.50. He bought each orange for $2.70 / 3 = $0.90. His profit for each orange is $1 - $0.90 = $0.10. His total profit for 5 oranges is $0.10 x 5 = $0.50. Therefore, his total profit for selling 5 apples and 5 oranges is $2.50 + $0.50 = $3.
The answer: 3
What was the question?
Question: A vendor bought apples at 2 for $3 and plans to sell them at 5 for $10. He also bought 3 oranges for $2.70 and plans to sell them at $1 each. How much is his profit if he sells 5 apples and 5 oranges?


Reasoning and answer: Of the colored paper, Barbara removed 3 * 2 = 6 sheets of paper. Of the white paper, she removed 2 * 4 = 8 sheets of paper. Of the scrap paper, she removed 5 * 20 = 100 sheets of paper. So in total, Barbara removed 6 + 8 + 100 = 114 sheets of paper.
The answer: 114
What was the question?
Question:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Barbara got a great deal on a new chest of drawers, but she has to take a lot of paper out of the drawers to be able to use it. She found 3 bundles of colored paper, 2 bunches of white paper, and 5 heaps of scrap paper. If a bunch holds 4 sheets of paper, a bundle holds 2 sheets of paper, and a heap holds 20 sheets of paper, how many sheets of paper did Barbara remove from the chest of drawers?