Respuesta :
The total cost is 308,
Then you have to subtract the cost of the car parts which is 100
That will give you $208
After that you have to divide 52 from 208, this will give you 4.
Therefore the technician worked on Richards car for 4 hours.
Then you have to subtract the cost of the car parts which is 100
That will give you $208
After that you have to divide 52 from 208, this will give you 4.
Therefore the technician worked on Richards car for 4 hours.