Question: A classroom of 15 students turned in essays on Friday morning. The first 5 students each turned in essays with 2 pages. The next 5 students each turned in essays with 3 pages. The last 5 students each turned in essays with 1 page. What is the average page count per essay for the 15 students?
Answer: The first 5 students turned in a total of 2 * 5 = 10 pages. The next 5 students turned in a total of 3 * 5 = 15 pages. The last 5 students turned in a total of 1 * 5 = 5 pages. In total there are 30 pages turned in by the students. For the 15 students, the average page count per essay is 30 / 15 = 2 pages. The answer is 2.
[Question]James makes potatoes for a group. Each person eats 1.5 pounds of potatoes. He makes potatoes for 40 people. A 20-pound bag of potatoes costs $5. How much does it cost?
[Answer]He needs 1.5 * 40 = 60 pounds of potatoes. So he needs to buy 60 / 20 = 3 bags of potatoes. So it cost 3 * 5 = $15. The answer is 15.
Q: Josie received $50 as a gift. She plans to buy two cassette tapes that cost $9 each and a headphone set that costs $25. How much money will she have left?
A: The cassette tapes will cost 2 × 9 = $18. She spends 18 + 25 = $43 in total. Josie will have 50 - 43 = $7 left. The answer is 7.
Question: The novelty shop on the Starship Conundrum sells magazines and chocolates. The cost of four chocolate bars is equal to the cost of 8 magazines. If one magazine costs $1, how much does a dozen chocolate bars cost, in dollars?
Answer: If one magazine costs $1, then 8 magazines cost 8 * $1 = $8. Let's define "x" as the cost of one chocolate bar. The cost of four chocolate bars is equal to the cost of 8 magazines and 4 * x = $8. Dividing each side by 4, we get the cost of one chocolate bar x = $2. Therefore, a dozen chocolate bars would cost 12 * $2 = $24. The answer is 24.
[Question]A choir splits into 3 groups for their performances. The first group has 25 members, and the second group has 30 members. The third group has the remaining members of the choir. If the choir overall has 70 members, how many members are in the third group?
[Answer]There are 25 + 30 members = 55 members in the first two groups. This means the third group has 70 total members – 55 members in the first two groups = 15 members. The answer is 15.
[Question]Matthew, Patrick and Alvin are eating dinner together. Matthew eats three times as many egg rolls as Patrick eats. Patrick eats half as many egg rolls as Alvin eats. If Alvin ate 4 egg rolls, how many did Matthew eat?
[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
Patrick eats 1 / 2 of the 4 egg rolls that Alvin eats, 1 / 2 x 4 = 2 egg rolls. Matthew eats 3x as many egg rolls as Patrick eats, 3 x 2 = 6 egg rolls that Matthew eats. The answer is 6.