Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked.
-An auto repair shop charged a customer $417 to repair a car. The bill listed $57 for parts and the remainder for labor. If the cost of labor is $45 per hour, how many hours of labor did it take to repair the car?
A) 7 hours
B) 8.5 hours
C) 9 hours
D) 8 hours

Question

Quizplus · Accepted Answer

Let x be the number of hours of labor.
The total cost of labor is equal to the total cost of repair minus the cost of parts:
45x = 417 - 57
45x = 360
x = 8
Therefore, it took 8 hours of labor to repair the car, which is option D.

Set Up an Equation That Can Be Used to Solve