Q: Adrian has the choice between two boxes of contacts. One has 50 contacts for $25, and the other has 99 contacts for $33. He chooses the box that costs less per individual contact. How many contacts will it take to equal $1 worth in whatever box he decides to buy?
A: First, we need to determine the price per contact in each of the two choices. We begin by performing 50 / 25 = 2 contacts per every dollar spent on choice A. Next, we determine the price per contact of the alternate choice. We do this by performing 99 / 33 = 3 contacts for every dollar spent on choice B. Since 3>2, Adrian purchases choice B. The answer is therefore 3. The answer is 3.
Question: The chef has 60 eggs. He puts 10 eggs in the fridge and uses the rest to make cakes. If he used 5 eggs to make one cake, how many cakes did the chef make?
Answer: After putting 10 eggs in the fridge, the chef has 60 - 10 = 50 eggs left to make cakes. Since it takes 5 eggs to make one cake, the chef can make 50 eggs ÷ 5 eggs per cake = 10 cakes. The answer is 10.
[Question]Mark is 7 years older than Amy, who is 15. How old will Mark be in 5 years?
[Answer]Mark is 15 years + 7 years = 22 years old. In 5 years, he will be 22 years + 5 years = 27 years old. The answer is 27.
Q: Out of the 150 students, 60% are girls and the rest are boys. Only 1/3 of the boys joined varsity clubs. How many of the boys did not join varsity clubs?
A: Out of the 150 students, 100% - 60% = 40% are boys. So, there are 150 x 40 / 100 = 60 boys. Out of the 60 boys, 60 x 1 / 3 = 20 joined varsity clubs. Therefore, 60 - 20 = 40 boys did not join varsity clubs. The answer is 40.
Question: There were 80 people at a football game on Saturday. On Monday, 20 fewer people were at the football game. On Wednesday, 50 more people were at the game than on Monday. On Friday, there were the same number of people as on Saturday and Monday combined. If their expected total audience at the football game for a week is 350, how many more people attended the games than they had expected?
Answer: On Monday, 80 - 20 = 60 people attended the game. On Wednesday, 60 + 50 = 110 people attended the game. On Friday, 80 + 60 = 140 people attended the game. A total of 80 + 60 + 110 + 140 = 390 people attended the games in a week. Therefore, 390 - 350 = 40 people more attended the games than they had expected. The answer is 40.
Q: A spider has eight legs. If a group of spiders has 10 more spiders than half as many legs as a single spider has, what is the total number of spider legs in this group of spiders?
A:

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
Half as many legs as a single spider has is 8 / 2 = 4 legs. 10 more spiders than half as many legs as a single spider has is 4 + 10 = 14 spiders. The total number of spider legs in a group of 14 spiders is 8 * 14 = 112 spider legs. The answer is 112.