Question: One kilogram of tomatoes is 20% cheaper than one kilogram of cucumbers. One kilogram of cucumbers costs $5. What is the price of two kilograms of tomatoes and three kilograms of cucumbers?
Answer: One kilogram of tomatoes is 20 / 100 * 5 = $1 cheaper than one kilogram of cucumbers. This means that one kilogram of tomatoes costs 5 - 1 = $4. So two kilograms of tomatoes is a cost of 2 * 4 = $8. And three kilograms of cucumbers is a cost of 3 * 5 = $15. So the price for both products would be 8 + 15 = $23. The answer is 23.
[Question]Four tires and one battery together cost $224. Each tire costs $42. Calculate the price of the battery.
[Answer]Four tires cost $42 x 4 = $168. So, the price of the battery is $224 - $168 = $56. The answer is 56.
Q: Jenny got a 95 on her paper. Jason's grade was 25 points less than Jenny's, and Bob's grade was equal to half of Jason's grade. What was Bob's grade?
A: First find Jason's grade by subtracting 25 from Jenny's grade: 95 - 25 = 70. Then divide Jason's grade by 2 to find Bob's grade: 70 / 2 = 35. The answer is 35.
Question: Sandra had 2 different bags of candy. Each of her bags had 6 pieces of candy left. Her brother, Roger, also had 2 bags of candy. One of his bags of candy had 11 pieces left and the other had 3 pieces left. How much more candy did Roger have?
Answer: Sandra had 2 bags that each contained 6 pieces of candy so 2 * 6 = 12 pieces. Roger had 11 pieces of candy in one bag and 3 pieces in the other so 11 + 3 = 14 pieces. Roger had 14 pieces and Sandra had 12 pieces so Roger has 14 - 12 = 2 more pieces of candy. The answer is 2.
[Question]John receives $100 from his uncle and gives his sister Jenna 1/4 of that money. He goes and buys groceries worth $40. How much money does John have remaining?
[Answer]When John gives his sister 1 / 4 of his money, he parts with 1 / 4 * 100 = 25 dollars. Johns remains with 100 - 25 = 75 dollars. When he buys groceries worth $40, he remains with 75 - 40 = 35 dollars. The answer is 35.
[Question]A farmer is growing corn. For every 4 seeds he plants, he gets one ear of corn, that he can sell for $.1. It costs $.5 for a bag with 100 seeds. If he makes $40 in profit, how many ears did he sell?
[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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A single seed costs $.005 because .5 / 100 = .005. It costs $.02 cents to grow an ear of corn because .005 x 4 = .02. On each ear of corn he makes $.098 profit because .1 - .02 = .08. He sold 500 ears because 40 / .08 = 500. The answer is 500.