Lavender Services uses time and material pricing. The billing rate, or time component, is R50 per hour of repair time and material loading charge is 40% of the invoice cost of parts used. Using these rates, calculate the billed amount of a repair job that requires 4 hours of mechanics time and R250 in parts. 

Answer rating: 100% (QA)

To calculate the billed amount for the repair job we need to calculate both the cost of labor ... View the full answer