Willies Engine Shop uses a job order cost system to determine the cost of performing engine repair work. Estimated costs and expenses for the coming period are as follows:

Engine parts		$931,600
Shop direct labor		680,000
Shop and repair equipment depreciation		50,900
Shop supervisor salaries		141,600
Shop property tax		25,700
Shop supplies		19,800
Advertising expense		18,600
Administrative office salaries		80,100
Administrative office depreciation expense		10,200
	Total costs and expenses	$1,958,500

The average shop direct labor rate is $20 per hour.

Determine the predetermined shop overhead rate per direct labor hour. Round the answer to nearest whole cent. $ per direct labor hour