A computer repair technician charges $35 for each job plus $21 per hour of labor and 110% of the cost of parts. The total charge for a three hour job was $169.5. What was the cost of parts for this job? Write and solve an equation and justify each step in the solution.

Question

danjs · Answer

Total Cost = 35 + 21*(hours) + 1.1*(Parts)

danjs · Answer

they give you (hours) and (Total Cost), put those in, and solve for (Parts)

danjs · Answer

$$169.50 = 35 + (21*3)+1.1*(Parts Cost)$$

Solve for (Parts Cost)