[Question]Ten boys brought 15 popsicle sticks each. Twelve girls brought 12 popsicle sticks each. How many fewer popsicle sticks did the girls bring than the boys?
[Answer]The boys brought a total of 10 x 15 = 150 popsicle sticks. The girls brought a total of 12 x 12 = 144 popsicle sticks. Therefore, the girls brought 150 - 144 = 6 fewer popsicle sticks than the boys. The answer is 6.
Q: Tammy just got her hair cut. For every 14 haircuts, she gets a free additional haircut. She has gotten 5 free haircuts already. She is 5 haircuts away from another free one. How many haircuts has she gotten there?
A: She has gotten 70 haircuts to get 5 free ones because 14 x 5 = 70. She has gotten 9 haircuts towards her 6th free one because 14 - 5 = 9. She has gotten 79 haircuts because 70 + 9 = 79. The answer is 79.
Question: Josh wants to build a square sandbox that is 3 ft long, 3 ft wide for his son. He can buy sand in 3 sq ft bags for $4.00 a bag. How much will it cost him to fill up the sandbox?
Answer: The sandbox is 3' long, 3' wide so the sq footage of the sandbox is 3 * 3 = 9 sq ft. He needs 9 sq ft of sand to fill the sandbox and he can buy it in 3 sq ft bags so he needs 9 / 3 = 3 bags of sand. The sand costs $4.00 a bag and he needs 3 bags so it will cost him 4 * 3 = $12.00 in sand. The answer is 12.
[Question]A lorry is 500 pounds when empty. What will its weight be if it's loaded with 20 bags of apples, each weighing 60 pounds?
[Answer]If the lorry is loaded with 20 bags of apples, each weighing 60 pounds, it will have an additional weight of 20 * 60 = 1200. The total weight of the lorry after being loaded with the bags of apples will be 500 + 1200 = 1700 pounds. The answer is 1700.
Q: A wheel on a certain machine makes 6 turns every 30 seconds. How many turns does it make in two hours?
A: Since there are 60 seconds in 1 minute, then there are 60 / 30 = 2 sets of 30 seconds in a minute. So a wheel makes 6 x 2 = 12 turns in 1 minute. Since there are 60 minutes in 1 hour, then a wheel makes 12 x 60 = 720 turns in an hour. Therefore, the wheel makes 720 x 2 = 1440 turns in 2 hours. The answer is 1440.
Question: A school cafeteria uses ground mince to cook lasagnas and cottage pies. They make 100 lasagnas, which use 2 pounds of ground mince each, and cottage pies, which use 3 pounds of ground mince each. If the cafeteria has used 500 pounds of ground mince in total, how many cottage pies did they make?
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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The cafeteria used 100 lasagnas * 2 pounds of ground mince = 200 pounds of ground mince for the lasagnas. This means they used 500 pounds of ground mince in total – 200 pounds of ground mince for the lasagnas = 300 pounds of ground mince for the cottage pies. So they must have made 300 pounds of ground mince for the cottage pies / 3 pounds of ground mince per cottage pie = 100 cottage pies. The answer is 100.