Come up with a question and reasoning that would justify [7] as the answer.
The question is: Carrie is wrapping three birthday presents. One present needs two square feet of wrapping paper to cover. The second present needs three-quarters of that amount. The third present needs the same amount as both other presents put together. How many square feet of wrapping paper does Carrie need for all three presents?
Reasoning: The second present needs 3 / 4 * 2 = 1 1 / 2 square feet of wrapping paper. The third present needs 2 + 1 1 / 2 = 3 1 / 2 square feet of wrapping paper. Therefore, Carrie needs 2 + 1 1 / 2 + 3 1 / 2 = 7 square feet of wrapping paper for all three presents.

Come up with a question and reasoning that would justify [3] as the answer.
The question is: In Alaska the commercial Cod fishing season runs from January 1 - August 1 lasting exactly 7 months, or 213 days on a non-leap year. Two fishermen are competing against each other to see who can earn more profit. The first fisherman plans to catch fish at a steady rate of 3 per day for the entire season. The second fisherman is a novice who will need to start more slowly. He plans to catch only 1 fish per day during the first 30 days, 2 fish per day during the next 60 days, and then 4 fish per day during the remainder of the season. At the end of the season, how many more fish will be caught by the fisherman who catches the higher number of fish?
Reasoning: The first fisherman will catch 3 * 213 = 639 fish during the season. The second fisherman catch 1 * 30 + 2 * 60 = 150 fish during the first 90 days of the season. Then, during the remaining 213 - 90 = 123 days of the season, the second fisherman will can an additional 4 * 123 = 492 fish. Thus, the second fisherman will catch a total of 150 + 492 = 642 fish. Therefore, the second fisherman will catch 642 - 639 = 3 more fish than the first fisherman at the end of the season.

Come up with a question and reasoning that would justify [50] as the answer.

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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The question is: A housewife goes to the market. She spent 2/3 of her $150. How much does she have left?
Reasoning: The housewife has 3 / 3 - 2 / 3 = 1 / 3 of $150 left. This means she has $150 * (1 / 3) = $50 left.