=+Purchase price of circuit board $gg Markup on purchase price to cover storage and handling 20 Total materials charge $80 Accounting Systemsfor Manufacturing Businesses 395 The labor charge per hour is detailed as follows:

2:00-3:00 p.m. $ 40 3:00-4:00 p.m. 35 4:00-5:00 p.m. 45 5:00-6:00 p.m. 70 Total labor charge $190 Further explanations in the differences in the hourly rates are as follows:

First hour:

Base labor rate $20 Fringe benefits 7