An automobile repair shop charged a customer ​$665​, listing ​$80 for parts and the remainder for labor. If the cost of labor is ​$65 per​ hour, how many hours of labor did it take to repair the​ car?

Answer 1

Hi Noah,

The total amount charged is sum of parts + hourly labor rate.

Take your total charged and subtract the cost of parts.

$665 - $80 = $585. This $585 is the charge of labor.

To calculate how many hours were worked, you must divide.

Divide $585 / $65 = 9. It took 9 hours of labor.

It would be good to double check that as well.

Here is what we think is the solution ( 9 hours ).

9 hours of labor multiplied by $65 = $585, so far so good.

$585 plus $80 for parts = $665, bingo!

I hope this helped you Noah!

Let me know if you'd like to schedule a tutoring lesson for additional help.

Thank you,