Question: Gentry assembled a new 24 foot round pool in her backyard. To fill the pool with water, she used four hoses. Two of the hoses each deliver water at a rate of 2 gallons per minute. The other two hoses each deliver water at a rate of 3 gallons per minute. With a volume of 15,000 gallons, how many hours will it take to fill the pool?
Answer: Each of the two hoses delivers water at a rate of 2 gallons per minute, for a combined total of 2 * 2 = 4 gallons of water per minute. The other two hoses each deliver water at a rate of 3 gallons per minute, for a combined total of 2 * 3 = 6 gallons of water per minute. Thus, all four hoses deliver a combined total of 4 + 6 = 10 gallons of water per minute. With a volume of 15,000 gallons, it would take 15,000 / 10 = 1500 minutes to fill the pool. Converting to hours, it will take 1500 / 60 = 25 hours to fill the pool. The answer is 25.

Question: Luke takes fifty more than five times as many grape jelly beans as vanilla jelly beans. If there are 120 vanilla jelly beans, how many jelly beans are there in total?
Answer: Luke takes 5 * 120 = 600 grape jelly beans, five times the vanilla jelly beans there are?. Luke's total number of grape jelly beans is fifty more than five times the number of vanilla jelly beans, a total of 600 + 50 = 650. In total, there are 650 + 120 = 770 jelly beans. The answer is 770.

Question: Last week, a farmer shipped 10 boxes of pomelos which had 240 pomelos in all. This week, the farmer shipped 20 boxes. How many dozens of pomelos did the farmer ship in all?
Answer: There were 240 / 10 = 24 pomelos in a box. This means that each box has 24 / 12 = 2 dozens of pomelos since 1 dozen is equal to 12. The farmer shipped a total of 10 + 20 = 30 boxes. Thus, the farmer shipped a total of 30 x 2 = 60 dozens of pomelos. The answer is 60.

Question: Xavier plays football with his friends. During 15 minutes Xavier can score 2 goals on average. How many goals on average is Xavier able to score, when the match lasted for 2 hours?
Answer:
Two hours means 2 * 60 = 120 minutes. So in 2 hours, there are with 120 / 15 = 8 groups of 15 minutes. So on average Xavier can score 8 * 2 = 16 goals. The answer is 16.