Question: If it takes 20 minutes to paint a house, how many houses can you paint in 3 hours?
Answer: There are 3 hours * 60 minutes / hour = 180 minutes in 3 hours. You can paint 180 minutes / 20 houses / minute = 9 houses in 3 hours. The answer is 9.
[Question]Colston knows that his teacher loves drinking coffee and one day wants to see how much she drinks each week. He sees that she has a 20-ounce thermos and when she makes her coffee she pours a 1/2 cup of milk in, and then fills the coffee to the top. She does this twice a day. After the five-day school week, he decides to tell her, and when she hears how much coffee she drinks, she decides to drink 1/4 of what she normally drinks. How many ounces of coffee does she now drink a week?
[Answer]1 / 2 a cup = 4 ounces. Each thermos contains 16 ounces of coffee because 20 - 4 = 16. She drinks 32 ounces a day because 2 x 16 = 32. She drinks 160 ounces a week because 32 x 5 = 160. She starts drinking only 40 ounces because 160 / 4 = 40. The answer is 40.
Q: John paints a giant mural that is 6m by 3m. The paint costs $4 per square meter. The artist can paint 1.5 square meters per hour and charges $10 per hour. How much does the mural cost?
A: The mural is 6 * 3 = 18 sq meters. So the paint cost 18 * 4 = $72. The artist works for 18 / 1.5 = 12 hours. He charges 12 * 10 = $120. So the total cost is 120 + 72 = $192. The answer is 192.
Question: Tom decides to buy some shirts from his favorite fandoms because there is a sale on his favorite website. He buys 5 t-shirts from each of his 4 favorite fandoms. The shirts normally cost $15 each but there is a 20% off sale.  The order qualified for free shipping but he still needed to pay 10% tax. How much did he pay?
Answer: He bought 5 * 4 = 20 shirts. The discount saves him 15 * .2 = $3 per shirt. So each shirt cost 15 - 3 = $12. So the total order cost 20 * 12 = $240. Tax added 240 * .1 = $24. So he paid 240 + 24 = $264. The answer is 264.
[Question]Kendra baked cookies for her family. Each batch contains 12 cookies. His family has 4 total people. She made three batches. Each cookie contains 2 chocolate chips. How many chips does each family member eat if they all get the same number of cookies?
[Answer]She made 36 cookies because 12 x 3 = 36. These contain 72 chocolate chips because 36 x 2 = 72. They each get to eat 18 chocolate chips because 72 / 4 = 18. The answer is 18.
[Question]Alexa was on vacation for 3/4ths of the time it took Ethan to learn 12 fencing tricks. Joey spent half as much this time (that Ethan spent learning the tricks) learning to swim. If Alexa spent a week and 2 days on vacation, how many days did it take Joey to learn swimming?
[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.
user
There are 7 days in one week so one week and 2 days = 7 + 2 = 9 days. Call the time Ethan spends learning tricks e. Alexa spent 9 days on vacation which is 3 / 4ths of the time Ethan spent learning 12 fencing tricks, hence (3 / 4)e = 9 days. If we multiply both sides of this equation by 4 / 3, we get e = (4 / 3) * 9 days = 12 days. Joey spent half of 12 days which is 12 / 2 = 6 days to learn swimming. The answer is 6.