Question 9 • EF Math 12 1st Nine Weeks
Add the listed parts and supplies: $6.00 + $28.50 + $20.00 + $15.00 + $2.50 = $72.00. Subtract that from the $272.00 total to find the labor charge: $272.00 − $72.00 = $200.00. Divide by 3.5 hours: $200.00 ÷ 3.5 ≈ $57.14 per hour, so the correct choice is $57.14 per hour.
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