A painter charges $15.64 per hour, plus an additional amount for the supplies. If he made $143.20 on a job where he worked 4 hours, how much did the supplies cost?

Answer 1

First, let's calculate how much the painter earned for the 4 hours of work:
4 hours x $15.64/hour = $62.56

Now, let's subtract this amount from the total amount he earned on the job to find out how much the supplies cost:
Total amount earned - Amount earned for hours worked = Cost of supplies
$143.20 - $62.56 = $80.64

Therefore, the supplies cost $80.64.