CR Corporation has the following estimated costs for the next year:

Direct materials	$4,000
Direct labor	$20,000
Rent on factory building	$15,000
Sales salaries	$25,000
Depreciation on factory equipment	$8,000
Indirect labor	$10,000
Production supervisor's salary	$12,000

CR Corporation estimates that 20,000 labor-hours will be worked during the year. If overhead is applied on the basis of direct labor-hours. Requirement: Please calculate the overhead rate per hour.