[Question]John buys 20 candy bars. His brother Dave pays for 6 of them. If each candy bar costs $1.50, how much did John pay?
[Answer]He paid for 20 - 6 = 14 candy bars. So he paid 14 * 1.5 = $21. The answer is 21.
Q: Three schools organized a science fair competition and invited students from all the schools to develop ideas and present them before a panel of judges selected by all the schools competing in the science fair. There were 50 students from Know It All High School at the competition, 3/5 times as many students from Karen High as Know It All High School, and twice the combined number of students from the first two schools that came were from Novel Corona High School. Calculate the total number of students at the competition?
A: If 50 students came from Know It All High School, then Karen High, which had 3 / 5 times as many students as Know It All High School, had 3 / 5 * 50 = 30 students at the fair. The total number of students from Know It All and Karen high schools is 50 + 30 = 80 students. If Novel Corona had twice the combined number of students from Know It All and Karen high schools, then it had 2 * 80 = 160 students at the competition. The total number of students at the competition is 80 + 160 = 240. The answer is 240.
Question: Rocco stores his coins in piles of 10 coins each. He has 4 piles of quarters, 6 piles of dimes, 9 piles of nickels, and 5 piles of pennies. How much money does Rocco have?
Answer: Each pile has 10 coins, so he has:. 10 * 4 * $.25 = $10.00 worth of quarters,. 10 * 6 * $.10 = $6.00 worth of dimes,. 10 * 9 * $.05 = $4.50 worth of nickels, and. 10 * 5 * $.01 = $0.50 worth of pennies. Altogether he has $10.00 + $6.00 + $4.50 + $0.50 = $21.00. The answer is 21.
[Question]In Zeoland the fine for speeding is $16 for each mile per hour the driver is traveling over the posted speed limit. In Zeoland, Jed was fined $256 for speeding on a road with a posted speed limit of 50 mph. Jed was fined for traveling at what speed in miles per hour?
[Answer]First find how much Jed was above the speed limit: $256 fine / $16 for each mile per hour over = 16 miles per hour over. Since the speed limit is 50 mph, this means Jed was driving 50 + 16 = 66 mph. The answer is 66.
Q: Kathryn moved to a new city for the new job she had landed two weeks ago. Her rent was $1200, 1/2 of what she spent on food and travel expenses in a month. Luckily, she found a new friend Shelby, who moved in with her to share the rent. If her salary was $5000 per month, how much money remained after her expenses?
A: If the rent is half what she spends on food and travel expenses, she spends 1200 * 2 = $2400 on food and travel costs. When her friend moved in and shared the rent costs with her, she started paying 1 / 2 * 1200 = $600 in rent costs. Her total monthly expenses is now 600 + 2400 = $3000. When she deducts her monthly expenses from her salary, she has $5000 - $3000 = $2000 remaining. The answer is 2000.
Question: Carrie is trying to sneak some mashed turnips into her kids' mashed potatoes. She knows they didn't notice when she mixed 2 cups of turnips with 5 cups of potatoes. If she has 20 cups of potatoes, how many cups of turnips can she add?
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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First find the number of cups of potatoes Carrie adds per one cup of turnips: 5 cups potatoes / 2 cups turnips = 2.5 cups potatoes / cup turnips. Then divide the number of cups of potatoes she has that that ratio to find the number of cups of turnips she adds: 20 cups potatoes / 2.5 cups potatoes / cup turnips = 8 cups turnips. The answer is 8.