Question: Andy harvests all the tomatoes from 18 plants that have 7 tomatoes each. If he dries half the tomatoes and turns a third of the remainder into marinara sauce, how many tomatoes are left?
Answer: First find the total number of tomatoes harvested: 18 plants * 7 tomatoes / plant = 126 tomatoes. Then divide that number by 2 to find how many tomatoes are left undried: 126 tomatoes / 2 = 63 tomatoes. Then divide that number by 3 to find how many tomatoes are turned into sauce: 63 tomatoes / 3 = 21 tomatoes. Then subtract that number from the number of undried tomatoes to find the remaining number of tomatoes: 63 tomatoes - 21 tomatoes = 42 tomatoes. The answer is 42.
[Question]Emily wants to know how much it rained last week. She sees that it rained 2 inches on Monday morning and 1 more inch later that day. It rained twice that much on Tuesday. It did not rain on Wednesday but on Thursday it rained 1 inch. The biggest storm was on Friday when the total was equal to Monday through Thursday combined. What was the daily average rain total for the week?
[Answer]The total rain was 2 inches + 1 inches = 3 inches on Monday. The total rain was 2 * 3 inches = 6 inches on Tuesday. The total rain was 0 inches + 1 inch = 1 inch across Wednesday and Thursday. The total rain was 3 inches + 6 inches + 1 inch = 10 inches on Friday. There were 3 inches + 6 inches + 1 inch + 10 inches = 20 inches total last week. 20 inches / 5 days = 4 inches average daily rain. The answer is 4.
Q: Stephen has 110 ants in his ant farm. Half of the ants are worker ants, 20 percent of the worker ants are male. How many female worker ants are there?
A: Worker ants:110 / 2 = 55 ants. Male worker ants:55(.20) = 11. Female worker ants:55 - 11 = 44 ants. The answer is 44.
Question: If Billy and Jenny each order a $20 steak along with a $5 drink, how much will Billy have to pay in tips if he wants to cover 80% of a 20% tip for the two of them?
Answer: First, we figure out the price per meal by adding the steak and the drink together, finding a cost of 20 + 5 = 25 per meal. Then we multiply this by 2, as there are two people eating, meaning a total cost of 25 * 2 = 50 for both meals. Then we find the total tip amount for a 20% tip, by multiplying 50 * .2 = 10. Then we find out what 80% of this tip amount is by multiplying the desired tip of 10 by .8, finding 10 * .8 = 8 dollars that Billy should contribute. The answer is 8.
[Question]Jenny had $24 left after spending 3/7 of her money. How much is half of her original amount of money?
[Answer]Jenny spent 1 - 3 / 7 = 4 / 7 of her money. Since 4 / 7 is equal to $24, then 1 / 7 is equal to $24 / 4 = $6. So, Jenny originally had $6 x 7 = $42. Therefore, half of her original amount of money is $42 / 2 = $21. The answer is 21.
[Question]Luis needed to buy some socks. He bought 4 pairs of red socks and 6 pairs of blue ones. In total, he spent $42. If the red socks cost $3 each, how much did he pay for each blue pair?
[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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Let B be the cost of the blue socks. 4 * 3 + 6 * Y = 42. 12 + 6 * Y = 42. 6 * Y = 30. Y = 5. The answer is 5.