urgent pls

Wolfgang's Autos customises cars for their owners. The business consists of the owner, who is a car body specialist, and an employee, who is a paint sprayer. The employee is paid 12 an hour and Wolfgang, the owner, pays himself the same amount. During the forthcoming month, it is expected that each will work a total of 125 hours. The costs (excluding wages) for the forthcoming month are expected to be: Cost Rent and rates 1,200 Heat and light 200 Insurance 150 Depreciation of equipment 850 Telephone 100 Water charges 100 Someone has asked Wolfgang to provide a quote for customising a particular car by fitting and spraying spoilers, for flaring the wheel arches and for raising the suspension. Wolfgang believes that the job would take 12 hours of his time and 8 hours of the employee's time. The cost of the parts is expected to be 350. Wolfgang charges customers on the basis of full cost plus 30 percent. Required: a) Suggest a price that Wolfgang should quote the customer. b) State the three reasons for using a predetermined overhead rate (POHR)