James recently hired an electrician to do some necessary work.

Question

James recently hired an electrician to do some necessary work. On the final bill, James was charged a total of $928. $445 was listed for parts and the rest for labor. If the hourly rate for labor was $46, how many hours of labor was needed to complete the job?

Answer 1

James recently hired an electrician to do some necessary work. On the final bill, James was charged a total of $928. $445 was listed for parts and the rest for labor. If the hourly rate for labor was $46, how many hours of labor was needed to complete the job?

Detailed Solution:

Total Cost = $928 = Parts (Fixed Cost) + Labor (Variable Cost)

$928 = $445 + 46x

46x = 928 – 445

46x = 483

x = 483/46 = 10.5 Hours

Answer 2

Well we know that $445 of the total $928 bill was for parts. Labor is the only remaining cost items, so that must have been 928 - 445 = $483. Each hour of labor is $46. How many 46's are there in 483? Looks like there were 10.5 hrs of labor.

You could set up an equation and solve for x, where x is the no. of labor hours: Total Bill = Parts + Labor

928 = 445 + 46x