Question

Jon has to pay a fix-it man $60 to come to his house and $30 per hour after that. How many hours did the fix it man work if Jon paid him $390?

Answer 1

Start with $390.

Subtract the fixed fee of $60 for the man to come to the house.

$390 - $60 = $330.

Jon paid $60 just for the man to come to the house. The rest of the money he paid, $330, is to cover the hourly rate.

Divide the $330 by the hourly rate to find the number of hours.

330/30 = 11

Answer: 11 hours

You can also set up an equation and solve it. Let t = number of hours.

Total cost = fixed fee + hourly fee

total cost = 60 + 30t

We are given a total cost of $390.

390 = 60 + 30t

330 = 30t

t = 11

Answer: 11 hours

Answer 2

Make an equation for this. Your equation should look like this:

60 + 30h = 390

60 represents the initial fee, and 30h represents 30 dollars per hour.

Solve the equation for h, number of hours the man worked. Subtract 60 from both sides.

30h = 330

Divide both sides by 30.

h = 11

The fix it man worked for 11 hours.