Question

An engine repair cost a truck owner $1,310 in parts and labor. If the parts were $680 and the mechanic charged $42 per hour, how many hours did the repair take?

hr

Answer 1

The repair took 15 hours.

Explanation:

To find out how many hours the repair took, you can set up an equation based on the given information.

Let "h" be the number of hours the repair took. The cost for the mechanic's labor is $42 per hour, and the cost for the parts is $680. The total cost for parts and labor is $1,310.

You can write this as an equation:

Total Cost = Labor Cost + Parts Cost

$1,310 = ($42/h) * h + $680

Now, let's solve for "h," the number of hours:

$1,310 = $42h + $680

Subtract $680 from both sides:

$1,310 - $680 = $42h

$630 = $42h

Now, divide both sides by $42 to isolate "h":

h = $630 / $42

h = 15