[Question]At Hank’s cafe, he sells big stack pancakes which have 5 pancakes and short stack pancakes which have 3 pancakes. If 9 customers order the short stack and 6 customers order the big stack, how many pancakes does Hank need to make?
[Answer]For the short stack orders, Hank needs to make 3 x 9 = 27 pancakes. For the big stack orders, he needs to make 5 x 6 = 30 pancakes. Altogether, Hank needs to make 27 + 30 = 57 pancakes. The answer is 57.
Q: John has to replace the ball bearings for machines he works with. He has 10 machines and they take 30 ball bearings each. It normally costs $1 per ball bearing but right now there is a sale where they are only $.75. Also since he is buying in bulk he gets a further 20% discount. How much money did he save by buying them all during the sale rather than 1 at a time?
A: He needs to replace 30 * 10 = 300 ball bearings. The normal price is 300 * 1 = $300. Because of the sale he only has to pay 300 * .75 = $225. He then gets a discount which shaves another 225 * .2 = $45 off the price. That means he only pays 225 - 45 = $180. So he saved 300 - 180 = $120. The answer is 120.
Question: Nikka has a 100 stamp collection. Thirty-five percent of her stamps are Chinese, 20% are US stamps, and the rest are Japanese stamps. How many Japanese stamps does Nikka have?
Answer: Nikka has 100 x 35 / 100 = 35 Chinese stamps. She has 100 x 20 / 100 = 20 US stamps. So, Nikka has 35 + 20 = 55 stamps that are not Japanese. Thus, Nikka has 100 - 55 = 45 Japanese stamps. The answer is 45.
[Question]Lilith is trying to break the world record for largest cap collection. She collects 3 caps per month in the first year, and 5 caps per month after the first year. Each Christmas, she also receives 40 caps from friends and family. She estimates that each year, she loses 15 of the caps she has collected. If Lilith has been collecting for 5 years, how many caps has she collected so far?
[Answer]In the first year, Lilith collects 3 caps * 12 months = 36 caps. Every year afterwards, she collects 5 caps * 12 months = 60 caps. She does this for a total of 5 – 1 = 4 years. This is a total of 60 caps * 4 years = 240 caps. In total, she collects 36 + 240 = 276 caps by herself. Over the Christmases, she receives 40 caps * 5 years = 200 caps from friends and family. She also loses 15 caps * 5 years = 75 caps over the years. She has therefore collected 276 + 200 – 75 = 401 caps. The answer is 401.
Q: Tom and Devin have been teaching for a total of 70 years. Devin has been teaching for 5 less than half the number of years that Tom has. How many years has Tom been teaching?
A: Let x be the number of years Tom has been teaching. Devin has been teaching for (1 / 2)x - 5 years. 70 = x + ((1 / 2)x - 5). 70 = (3 / 2)x - 5. 75 = (3 / 2)x. x = 50. Tom has been teaching for 50 years. The answer is 50.
Question: Billy wants to watch something fun on YouTube but doesn't know what to watch. He has the website generate 15 suggestions but, after watching each in one, he doesn't like any of them. Billy's very picky so he does this a total of 5 times before he finally finds a video he thinks is worth watching. He then picks the 5th show suggested on the final suggestion list. What number of videos does Billy watch?
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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Billy has 15 suggestions generate for him 5 times for 15 * 5 = 75 videos. There are 15 - 5 = 10 shows in the final set of suggestions he doesn't consider. This means he picks the 75 - 10 = 65th show YouTube suggests. The answer is 65.