CR Company has the following estimated costs for the next year: Direct materials Direct labour Rent on factory building Sales salaries Depreciation on factory equipment Indirect labour Production supervisor's salary $ 4,000 20,000 15,000 25,000 8,000 10,000 12,000 CR Company estimates that 20,000 labour hours will be worked during the year. If overhead is applied on the basis of direct labour hours, the overhead rate per hour will be