Reasoning and answer: Percentage means per 100, so if she still owes 75%, she must have paid 100% - 75% = 25% of the original amount. 25% of the original amount = (25 / 100) * original amount = $125. Multiplying both sides by (100 / 25) gives: original amount = (100 / 25) * $125 = $500.
The answer: 500
What was the question?
Question: Mathilda is determined to pay back the money she owes a friend so she decides to pay an initial installment of $125. If she still has 75% left to pay, how much did she owe originally?


She eats 3 beignets every morning and there are 7 days in a week so she eats 3 * 7 = 21 beignets in a week. She eats 21 beignets in a week so over 16 weeks she will have eaten 21 * 16 = 336 beignets.
The answer: 336
Reverse engineering the question: Sandra eats 3 beignets every morning. How many beignets will she eat in 16 weeks?


Reasoning and answer: He needs 160 ice cubes because 10 / (1 / 16) = 160. It will take him 16 hours because 160 / 10 = 16. His ice maker will cost $24 to run because 16 x 1.5 = 24. He will need 320 ounce of water because 160 x 2 = 320. This will cost him $32 because 320 x .1 = 32. It will cost in total $56 to make all the ice because 24 + 32 = 56.
The answer: 56
What was the question?
Question: Pauly is making ice cubes. He needs 10 pounds of cubes. He knows that 2 ounces of water make 1 cube and each cube weighs 1/16th of a pound. It takes him 1 hour to make 10 cubes. Every hour his ice maker run costs $1.50. Every ounce of water costs $0.10. How much will it cost to make all the ice?


There are 3 + 1 = 4 members joining. So the cost is 4 * 4000 = $16,000 to join. The monthly fee comes out to 1000 * 12 = $12,000 per person per year. So that is 12000 * 4 = $48,000. So the total cost is 16,000 + 48,000 = $64,000. So John pays 64000 / 2 = $32,000.
The answer: 32000
Reverse engineering the question: John joins a country club with 3 other members of his family. The fee to join is $4000 per person. There is also a monthly cost of $1000 per person. John pays half the cost. How much does John pay for the first year?


Reasoning and answer: The boy grew 36 - 24 = 12 inches since the tree was planted. Since the tree grows twice as fast as the boy, it will have grown 12 * 2 = 24 inches during this time period. Thus, the final height of the tree is 16 + 24 = 40 inches.
The answer: 40
What was the question?
Question: A mother planted a 16-inch tree on her son's first birthday. On the day the tree was planted, the boy was 24 inches tall. If the tree grows twice as fast as the boy does, how tall will the tree be by the time the boy is 36 inches tall?


Reasoning and answer: The total number of jewelry Jessy had before going to the store is 10 necklaces + 15 earrings = 25. At the store, Jessy bought 2 / 3 * 15 = 10 earrings. When she got back from the store, Jessy received 1 / 5 * 10 = 2 more earrings than the ones she bought at the store from her mother. The total number of earrings Jessy received from her mother is 2 + 10 = 12 earrings. The total number of earrings Jesy has after being given 12 more from her mother is 10 + 12 = 22 earrings outside the jewelry box. When Jessy puts all the jewelry in the box, the total number becomes 22 new earrings + 10 new necklaces + 25(the total number of jewelry she had before) = 57.
The answer: 57
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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A jewelry box has 10 necklaces and 15 earrings. Jessy goes to the jewelry stores and buys 10 more necklaces and 2/3 as many earrings as before. After returning home, her mother gives her 1/5 times more earrings than the number she purchased at the store. Calculate the total number of jewelry pieces Jessy has in her box if she puts all of them together.