Q: Keith scored 3 points on the math test. Larry scored 3 times as many marks. Danny scored 5 more marks than Larry. Find the total amount of marks scored by the three students.
A: Larry scored 3 x 3 = 9 marks. Danny scored 9 + 5 = 14 marks. The total marks scored by the three students is 3 + 9 + 14 = 26. The answer is 26.
Question: Three blue chips are in a jar which is 10% of the entire chips. If 50% of the chips are white and the rest are green, how many green chips are there?
Answer: 10% + 50% = 60% of the chips in the jar are not green. So, 100% - 60% = 40% of the chips are green. There are 40% / 10% = 4 sets of 10% to make 40%. Hence, there are 3 chips x 4 sets = 12 green chips. The answer is 12.
[Question]Emmalyn decided to paint fences in her neighborhood for twenty cents per meter. If there were 50 fences in the neighborhood that she had to paint and each fence was 500 meters long, calculate the total amount she earned from painting the fences.
[Answer]The total length for the fifty fences is 50 * 500 = 25000 meters. If Emmalyn charged twenty cents to paint a meter of a fence, the total income she got from painting the fences is $0.20 * 25000 = $5000. The answer is 5000.
Q: Chuck can ride the merry-go-round 5 times longer than Dave who can only ride it for 10 minutes before getting sick. Erica can stay on the merry-go-round 30% longer than Chuck before getting sick. How long can Erica stay on the merry-go-round?
A: Dave can ride the merry - go - round for 10 minutes and Chuck can ride 5 times longer than Dave so he can ride for 10 * 5 = 50 minutes. Erica can stay on 30% longer than Chuck who can ride for 50 minutes so that's an extra .30 * 50 = 15 minutes. Chuck can ride for 50 minutes and Erica can ride an extra 15 minutes for a total of 50 + 15 = 65 minutes. The answer is 65.
Question: To raise funds for her local soup kitchen, Didi enlisted the help of her family, friends, and neighbors. They donated 10 same-size cakes that she sliced into 8 slices per cake and started selling a slice for $1. A local business owner was so impressed by Didi's efforts that she offered to donate 50 cents for each slice Didi sold. A second business owner also offered to donate a quarter for each slice sold. If Didi sold all the slices, how much money did she raise?
Answer: All the cakes yielded 10 * 8 = 80 slices. Since Didi was selling each slice for $1, it means she sold everything for 80 * 1 = 80 dollars. The first business owner donated 50 / 100 * 80 = 40 dollars. The second business owner donated 25 / 100 * 80 = 20 dollars. Adding both amounts gives 80 + 40 + 20 = 140 dollars. The answer is 140.
Q: John is laying the foundation for 3 homes. Each home needs a slab of concrete that is 100 feet by 100 feet by .5 feet. Concrete has a density of 150 pounds per cubic foot. A pound of concrete cost $.02 per pound. How much does the foundation cost?
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.
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The volume of the slab is 100 * 100 * .5 = 5000 cubic feet. So it weighs 5000 * 150 = 750000 pounds. That means the cost is 750000 * $0.02 = $15,000 per house. So the total cost for all 3 houses is $15000 * 3 = $45,000. The answer is 45000.