Q: Reese has been practicing piano for four hours every week. How many hours will he practice after five months?
A: If Reese practices 4 four hours every week, in a month, with four weeks, he would have practiced for 4 * 4 = 16 hours. In five months, Reese would have practiced for 5 * 16 = 80 hours. The answer is 80.
Question: Jan enters a double dutch competition. After training she doubles her speed which used to be 70 skips per minute. How many skips does she do in 5 minutes?
Answer: She does 70 * 2 = 140 skips a minute. So he does 140 * 5 = 700 skips in the 5 minutes. The answer is 700.
[Question]A dog is being treated for fleas. One flea treatment gets rid of half the fleas. After four treatments, the dog has 14 fleas left. How many more fleas did the dog have before the flea treatments than after?
[Answer]After three treatments, the dog had 14 * 2 = 28 fleas. After two treatments, the dog had 28 * 2 = 56 fleas. After one treatment, the dog had 56 * 2 = 112 fleas. Before any treatments, the dog had 112 * 2 = 224 fleas. Thus, the dog had 224 - 14 = 210 more fleas before the treatments than after. The answer is 210.
Q: A movie theater charges $5 for matinee tickets, $7 for evening tickets, and $10 for opening night tickets. A bucket of popcorn costs $10. On Friday, they had 32 matinee customers, 40 evening customers, and 58 customers for an opening night showing of a movie. If half the customers bought popcorn, how much money in dollars did the theater make on Friday night?
A: The movie theater made 5 * 32 = $160 in matinee tickets. It made 7 * 40 = $280 in evening tickets. It made 10 * 58 = $580 in opening night tickets. There were 32 + 40 + 58 = 130 customers. Half of the customers bought popcorn, so 130 / 2 = 65 bought popcorn. Thus, the theater made 10 * 65 = $650 from popcorn. Therefore, in all, the theater made 160 + 280 + 580 + 650 = $1670 on Friday night. The answer is 1670.
Question: To get to the library, Jill spends 12 minutes waiting for her first bus, 30 minutes riding on her first bus, and half the combined wait and trip time on her second bus. How many minutes does her second bus ride take?
Answer: First add the time spent waiting for the first bus to the time spent on it: 12 minutes + 30 minutes = 42 minutes. Then divide that time by 2 to find the time she spends on the second bus: 42 minutes / 2 = 21 minutes. The answer is 21.
Q: Mary and Ann are going sledding. Mary slides down a hill that's 630 feet long at a speed of 90 feet/minute. Ann slides down a hill that's 800 feet long at a rate of 40 feet/minute. How much longer does Ann's trip take than Mary?
A:
First find the total time Mary's trip takes: 630 feet / 90 feet / minute = 7 minutes. Then find the total time Ann's trip takes: 800 feet / 40 feet / minute = 20 minutes. Then subtract Mary's time from Ann's time to find the difference: 20 minutes - 7 minutes = 13 minutes. The answer is 13.