Mark needs to replace the radiator in his car. The work takes 2 hours and the mechanic charges $75 an hour. The part cost $150. How much did he pay? Give the rationale and then the answer.
Let's think step by step. He had to pay for 2 hours of labor, which cost 2 * $75 = $150. So the total cost was $150 + $150 = $300.. The answer is: 300.

Yella's computer usage last week was 91 hours. If she plans to use the computer 8 hours a day for this week, how much less is her computer usage for this week? Give the rationale and then the answer.
Let's think step by step. Yella can use the computer 8 x 7 = 56 hours for this week. Therefore, Yella's computer usage for this week is 91 - 56 = 35 hours lesser than her computer usage last week.. The answer is: 35.

Melanie is making meatballs for dinner. The recipe calls for breadcrumbs. To make the breadcrumbs Melanie is going to tear 2 slices of bread into smaller pieces and then add them to a blender to grind them into fine crumbs. First she tears the bread slices each in half, then tears those halves in half. How many bread pieces is Melanie going to put into the blender? Give the rationale and then the answer.
Let's think step by step. Melanie starts with 1 slice of bread that she tears in half, making 2 halves. She takes both of those halves and tears them each in half, 2 halves x 2 more halves in half = 4 pieces per slice of bread. Melanie is using 2 slices of bread x 4 pieces each = 8 pieces overall to add to the blender.. The answer is: 8.