Lonely guy repair service recently performed repair

Reference no: EM13593629

Lonely Guy Repair Service recently performed repair services for a customer that totaled $400. Somehow the bill was lost and the company accountant was trying to recreate the bill from memory. This is what was remembered:

Total bill	$600
Labor profit margin	$10
Materials profit margin	20%
Total labor charges	$390
Cost of materials used	$120
Total hourly cost	$22.50

How many hours were billed on the job?

Reference no: EM13593629

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