[Question]Michael was watching a TV show, which was aired for 1.5 hours. During this time, there were 3 commercials, which lasted 10 minutes each. How long (in hours) was the TV show itself, not counting commercials?
[Answer]Each commercial lasted 10 minutes, so three commercials lasted 3 * 10 = 30 minutes. The show was aired for 1.5 hours, and 30 minutes is 0.5 of an hour, so without the commercials, the show was 1.5 - 0.5 = 1 hour long. The answer is 1.
Q: The ski lift carries skiers all the way from the bottom of the mountain to the very top of the mountain, and then drops them off so they can ski back down the mountain. If it takes a skier 15 minutes to ride the lift from the bottom to the top of the mountain, and then it takes 5 minutes to ski back down the mountain, what is the most number of times a person can ski down the mountain in 2 hours?
A: East trip up and back down the mountain takes 15 + 5 = 20 minutes per trip. Two hours is 2 * 60 = 120 minutes. Therefore, in 120 minutes, a skier can take 120 / 20 = 6 trips up and back down the mountain. The answer is 6.
Question: Daniel collects Russian dolls that normally cost $4 each. He saves enough money to buy 15 Russian dolls. However, the price suddenly drops to $3 each. How many Russian dolls can he buy now at the discounted price, given his savings?
Answer: With the price of each doll at $4, this means he has saved a total of 15 * 4 = $60. When the price is lowered to $3 each, he can now purchase 60 / 3 = 20 dolls. The answer is 20.
[Question]Adah practiced the cello for a total of 7.5 hours last week. He practiced for 86 minutes on each of 2 days. How many minutes in total did he practice on the other days?
[Answer]7.5 hours = 450 minutes. Two days = 2 * 86 = 172 minutes. 450 - 172 = 278 minutes. Adah practiced a total of 278 minutes on the other days. The answer is 278.
Q: A pickup truck can fill 20 eight gallon water cans (each can filled three quarters of its capacity) in three hours. If each can is filled to full capacity instead, how long, in hours, will it take to fill 25 cans?
A: Each can is filled with 8 / 4 * 3 = 6 gallons of water. A total of 6 * 20 = 120 gallons of water is filled in 3 hours. In 1 hour, 120 / 3 = 40 gallons of water is filled. 25 full cans can hold 25 * 8 = 200 gallons of water. It will take 200 / 40 = 5 hours to fill 25 cans to full capacity. The answer is 5.
Question: About 450 000 people lived in Maryville in 2000. In 2005, about 467 000 people lived in Maryville. What is the average number of people added each year?
Answer:
The total increase of people was counted in 2005 - 2000 = 5 years. In 5 years, there is a total of 467 000 - 450 000 = 17 000 people increase. So, each year, the average number of people added is 17 000 / 5 = 3 400. The answer is 3400.