[Question]: An air conditioner running for eight hours would consume 7.2 kilowatts. How many kilowatts would the air conditioner consume if it was used for 6 hours a day for 5 days?
[Answer]: The air conditioner consumes 7.2 / 8 = 0.9 kilowatt per hour. So, in 6 hours, it will consume 0.9 kilowatts per hour * 6 hours = 5.4 kilowatts. In 5 days, its total consumption is 5.4 kilowatts * 5 = 27 kilowatts.
So the answer is 27.

[Question]: If Pete read twice as many books as Matt did last year, and this year he doubles that number while Matt reads only 50% more, how many books does Pete read across both years if Matt read 75 books in his second year?
[Answer]: First, we need to find the amount Matt read both years to establish what Pete read, so to find Matt's first - year total we multiply 75 / 1.5 = 50 books the previous year. Since Pete read twice as many books as Matt did in the first year, and Matt's first - year total is 50, this means Pete read 50 * 2 = 100 books his first year. Since Pete doubled the number of books he read the following year, this means Pete read 100 * 2 = 200 books the following year. We add the two years of Pete's reading together to find 200 + 100 = 300 books read in total.
So the answer is 300.

[Question]: Stefan goes to a restaurant to eat dinner with his family. They order an appetizer that costs $10 and 4 entrees that are $20 each. If they tip 20% of the total for the waiter, what is the total amount of money that they spend at the restaurant?
[Answer]:
The total cost of the entrees is 4 * $20 = $80. The total cost of the dinner is $80 + $10 = $90. The tip is $90 * 0.20 = $18. The total cost with tip is $90 + $18 = $108.
So the answer is 108.