Reasoning and answer: If she changes the box weekly, then in 210 days, she will change the box 210 / 7 = 30 times. At 15 pounds of litter for every box change, she will require 30 * 15 = 450 pounds of cat litter in 210 days. If she buys 45 - pound containers, then for 450 pounds she will need to buy 450 / 45 = 10 containers of litter. At $21 per container, to buy enough cat litter for 210 days, it will cost 10 * $21 = $210.
The answer: 210
What was the question?
Question: Janet buys 45-pound containers of cat litter for $21 each. If her cat litter box holds 15 pounds of cat litter, and she changes out the litter weekly, how much will it cost, in dollars, for her to buy enough litter to last 210 days?


They collected $250 from Bronze Status families because 10 times 25 equals 250. They collected $350 from Silver Status families because 7 times 50 equals 350. They collected $100 from Gold Status families because 1 times 100 equals 100. Therefore, they collected $700 thus far because 250 plus 350 plus 100 equals 700. They need to collect $50 more because 750 minus 700 equals 50.
The answer: 50
Reverse engineering the question: The school decided to have a fundraiser to collect $750 for new basketball equipment. Families could donate $25, $50, or $100. Families who donated $25 got Bronze Status. Families who donated $50 got Silver Status. Families who donated $100 got Gold Status. With one day left in the fundraiser, the school has 10 Bronze Status families, 7 Silver Status Families and 1 Gold Status family. How much do they need to raise on the final day to reach their goal?


Reasoning and answer: Let x be the number of birds on the fence. We know that 10 + 2 * x = 50. Subtracting 10 from both sides, we get 2 * x = 50 - 10 = 40. Dividing both sides by 2, we get x = 20.
The answer: 20
What was the question?
Question: Ten more than twice the number of birds on the fence is 50. How many birds are on the fence?


Let x be the number of toys Mandy has. Anna has 3 * x toys. Amanda has 3 * x + 2 toys. x + 3 * x + 3 * x + 2 = 142. 7 * x + 2 = 142. 7 * x = 140. x = 20.
The answer: 20
Reverse engineering the question: Anna has 3 times as many toys as Mandy and 2 fewer toys than Amanda. If they have 142 toys all together, how many toys does Mandy have?


Reasoning and answer: Let S be the length of the short side of the fence. Thus, the length of a long side of the fence is 3S. There are 2 of each side, so the whole fence is 2S + 2 * 3S = 2S + 6S = 8S long. The whole fence is 8S = 640 feet long. Thus, the short side of the fence that needs to be replaced is S = 640 / 8 = 80 feet long.
The answer: 80
What was the question?
Question: A rectangular plot of private property is fenced in by a chain-link fence. The long sides of the plot are three times the length of the short sides. One short side of the fence is rusted from being hit by a sprinkler and needs to be replaced. If all the sides of the fence together are 640 feet long, how many feet of fence need to be replaced?


Reasoning and answer: There are 10 students in Liam's art class and 1 / 2 of them make a different amount of artworks than the other half, 1 / 2 x 10 = 5 students. 5 students make 3 artworks each, 5 x 3 = 15 artworks. The other 5 students make 4 artworks each, 5 x 4 = 20 artworks. Combined, the students in the class make 15 + 20 = 35 artworks.
The answer: 35
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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Liam is teaching art to a group of 10 students. He has 20 art kits that he hands out to the students to share, 1 art kit for 2 students. From those art kits half the students make 3 artworks each and half the students make 4 artworks each. How many artistic works does the whole class create?