An engine repair cost a truck owner $1,370 in parts and labor.

Question

An engine repair cost a truck owner $1,370 in parts and labor. If the parts were $680 and the mechanic charged $46 per hour, how many hours did the repair take?

Answer 1

Let X = number of hrs by the mechanic to repair truck

 

Total Cost = $1370

 

Total Parts Cost = $680

 

Total Labor Cost = $46*X

 

Total Parts Cost + Total Labor Cost = Total Cost

 

$680 + $46*X = $1370     Solve for X

 

$45*X  = $1370 - $680  = $690

 

X = $690/$45  = 15.33 hr to repair truck