Question: 4 students participated in a 200m race. If the average completion time of the last three students was 35 seconds, and the average completion time of all four runners was 30 seconds, how long (in seconds) did it take the student who came first to finish the race?
Answer: The last 3 students had an average completion time of 35 seconds so the sum of their completion times was 3 * 35 = 105 seconds. All 4 students (now including the student who came first) had an average completion time of 30 seconds, meaning the sum of their completion times is 4 * 30 = 120 seconds. The student who came first spent 120 - 105 = 15 seconds in the race. The answer is 15.
[Question]Every 4 weeks, Helen hand washes her silk pillowcases. It takes 30 minutes to hand wash all of them. In 1 year, how much time does Helen spend hand washing her pillowcases?
[Answer]She hand washes them every 4 weeks and there are 52 weeks in a year so she washes them 52 / 4 = 13 times per year. It takes her 30 minutes to hand wash the pillowcases and she does this 13 times per year for a total of 30 * 13 = 390 minutes per year. The answer is 390.
Q: A baker sells pastries for $5 and works 7 days a week. On Monday he sold 2. Every day the number of sales increases by 1 compared to the previous day. On average, how many pastries does he sell on each day of the week?
A: You know from the statement that on Monday he sells 2 pastries, so on Tuesday he sells 3, Wednesday 4, Thursday 5, Friday 6, Saturday 7 and Sunday 8 pastries. So the average value is (2 + 3 + 4 + 5 + 6 + 7 + 8) pastries / 7 days. The baker sells, on average, 35 / 7 = 5 pastries / day for 1 week. The answer is 5.
Question: Maggie has an after-school job that pays her $5.00 for every magazine subscription she can sell. She sells 4 to her parents, 1 to her grandfather, 2 to the next-door neighbor and twice that amount to another neighbor. How much money did Maggie earn?
Answer: Maggie sells 2 subscriptions to a neighbor and twice that amount to another neighbor so she sells 2 * 2 = 4 subscriptions to the other neighbor. In total, Maggie sells 4 + 1 + 2 + 4 = 11 subscriptions. She earns $5.00 per subscription she sells so she earns 5 * 11 = $55.00. The answer is 55.
[Question]A carpenter made ten tables for this month. Last month, he made three fewer tables than this month. How many tables did the carpenter make in total?
[Answer]The carpenter made 10 - 3 = 7 tables last month. So, the carpenter made 10 + 7 = 17 tables in all. The answer is 17.
[Question]Sally Draper gave her dad Don Draper 10oz of rum on his pancakes. Don can consume a maximum of 3 times that amount of rum for a healthy diet. If he already had 12oz of rum earlier that day, how many oz of rum can Don have after eating all of the rum and pancakes?
[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
3 times the initial amount of 10 oz is 3 * 10 = 30 oz. He has consumed 10 + 12 = 22 oz of rum. He can still consume 30 - 22 = 8 oz of rum. The answer is 8.