Answer this question:John has 3 bedroom doors and two outside doors to replace. The outside doors cost $20 each to replace and the bedroom doors are half that cost. How much does he pay in total?
The outside doors cost 2 * $20 = $40. Each indoor door cost $20 / 2 = $10. So all the indoor doors cost $10 * 3 = $30. That means the total cost is $40 + $30 = $70.
The answer is 70.

Answer this question:Two days ago, the temperature in the morning went up 1.5 degrees every 2 hours. If the temperature was 50 degrees at 3 A.M., what was the temperature at 11 A.M.?
At 5 A.M., the temperature was 50 degrees + 1.5 degrees = 51.5 degrees. At 7 A.M., the temperature was 51.5 degrees + 1.5 degrees = 53 degrees. At 9 A.M., the temperature was 53 degrees + 1.5 degrees = 54.5 degrees. At 11 A.M., the temperature was 54.5 degrees + 1.5 degrees = 56 degrees.
The answer is 56.

Answer this question:Donna is catering for a party. She makes 20 sandwiches and then cuts them in half, before cutting them in half again. She then gives everyone 8 portions. How many people can she feed?
First, we need to determine the overall number of portions. To do this, we begin by performing 20 * 2 = 40 portions after the first halving. Next, we take this portion number and double it again, performing 40 * 2 = 80 portions after the second halving. Lastly, we divide this portion number by the number of portions each person will be served, performing 80 / 8 = 10 people served.
The answer is 10.

Answer this question:John repairs 5 cars. 3 of the cars take 40 minutes each to repair. The remaining ones take 50% longer each to repair. He makes $20 per hour repairing cars. How much money does he make?
The 3 cars take 3 * 40 = 120 minutes to make. He repairs 5 - 3 = 2 more cars. They each take 40 * .5 = 20 minutes longer per car. So they each take 40 + 20 = 60 minutes. So he repaired cars for 120 + 2 * 60 = 240 minutes. That is 240 / 60 = 4 hours. So he made 4 * 20 = $80.
The answer is 80.