Question

You are a self-employed plumber. Your charges are: $22.50 per hour for labor, $0.50 per mile for travel to and from home, and the cost of materials plus 5%. Your last job was 35 miles from home. You took 4.5 hours to complete the job. The parts cost $350. Your invoice to the customer was for $468.75.

Was the invoice correct? If not, why?

A)No. You did not charge for travel.
B)Yes. The invoice was correct.
C)No. You charged too much for materials.    (ANSWER)
D)No. You charged too much for travel.

Answer 1

22.50 per hr for 4.5 hrs = 101.25...work pay
35 miles at 0.50 per mile = 0.50(35) = 17.50...travel pay
parts : 350 * 1.05 = 367.50...parts and taxes
total : 101.25 + 17.50 + 367.50 = 486.25

486.25 - 468.75 = 17.50.

answer is : The invoice is incorrect....he did not charge for travel <==