Reasoning and answer: If 40 pounds of food was donated to the food bank in the first week, the second week, which had twice the amount of food donated as the first week, had 2 * 40 = 80 pounds of food. The total amount of food donated to the food bank after the second week is 40 + 80 = 120 pounds. In the third week, she gave to the homeless 70 / 100 * 120 = 84 pounds of food. The total amount of food remaining in the food bank after she gave out 70% to the homeless is 120 - 84 = 36 pounds of food.
The answer: 36
What was the question?
Question: Lyanna set up a food bank to collect food to give to the homeless in her local town. In the first week, 40 pounds of food were donated to the food bank by the people of her local town. In the second week, donations were twice as high as the first week. If she gave out 70% of the donated food to the homeless in the third week, calculate the amount of food remaining in the food bank.


After three treatments, the dog had 14 * 2 = 28 fleas. After two treatments, the dog had 28 * 2 = 56 fleas. After one treatment, the dog had 56 * 2 = 112 fleas. Before any treatments, the dog had 112 * 2 = 224 fleas. Thus, the dog had 224 - 14 = 210 more fleas before the treatments than after.
The answer: 210
Reverse engineering the question: A dog is being treated for fleas. One flea treatment gets rid of half the fleas. After four treatments, the dog has 14 fleas left. How many more fleas did the dog have before the flea treatments than after?


Reasoning and answer: Robert earned a commission of $23600 x 10 / 100 = $2360. So, he earned a total of $1250 + $2360 = $3610. And, he saved $3610 x 20 / 100 = $722. Therefore, his total expenses last month was $3610 - $722 = $2888.
The answer: 2888
What was the question?
Question: Robert, a sales agent, earns a basic salary of $1250 per month and, 10% commission on his monthly sales. Last month, his total sales were $23600. He allocated 20% of his total earnings to savings and the rest of the money to his monthly expenses. How much were his monthly expenses last month?


Clara climbed past 96 / 3 = 32 steps made up of 3 blocks of stone each. At 8 steps per level, there are 32 / 8 = 4 levels in the tower.
The answer: 4
Reverse engineering the question: Clara is climbing to the top of a historical tower with stone stairs. Each level has eight huge steps in the stairs. Every step is made up of three massive blocks of stone. By the time she reaches the top, she has climbed past 96 blocks of stone. How many levels are there in the tower?


Reasoning and answer: First find the number of pups in the first generation: 8 mice * 6 pups / mouse = 48 pups. Then add the number of adult mice to find the total number of mice: 48 pups + 8 mice = 56 mice. Then find the number of pups per mouse that survive from the second generation: 6 pups / mouse - 2 pups / mouse = 4 pups / mouse. Then multiply that number by the number of adult mice to find the number of pups in the second generation: 56 mice * 4 pups / mouse = 224 mice. Then add the number of adult mice to the number of second - generation pups to find the total number of mice: 224 mice + 56 mice = 280 mice.
The answer: 280
What was the question?
Question: Billy is breeding mice for an experiment. He starts with 8 mice, who each have 6 pups. When the pups grow up, all the mice have another 6 pups. Then each adult mouse eats 2 of their pups due to the stress of overcrowding. How many mice are left?


Reasoning and answer: After the 50% discount, the t - shirt cost 20 * 0.5 = $10. So in all, the 4 friends spent 4 * $10 = $40.
The answer: 40
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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4 friends went to buy from a clothes shop. Every item was 50% off. All four friends decided to buy a t-shirt. The original price of the t-shirt was 20 dollars. How much money did they spend in total?