Time Material Charges Charges Shop employees' wages and $130000 benefits Parts manager's salary and 45000 benefits Office employee's salary and 25000 15000 benefits Other overhead 20000 40000 Invoice cost of parts and 400000 materials Total budgeted costs $175000 $500000 The material loading charge to be used next year assuming a 45% markup on material cost is O 45%. O 20%. O 80%. 70%