Answer:
$40
Step-by-step explanation:
Well, since he was charged an extra 215 for parts, we can subtract that from the total bill, 375.
375-215=160.
Now that you only have the amount charged for the 4 hours, 160, you can divide that by 4.
160/4=40.
Now we know that the mechanic charged $40 an hour for his labor.
