Predetermined Factory Overhead Rate Novus 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 $885,000 Shop direct labor 646,000 Shop and repair equipment depreciation 43,900 Shop supervisor salaries 122,100 Shop property taxes 22,200 Shop supplies 17,000 Advertising expense 17,700 Administrative office salaries 76,100 Administrative office depreciation expense 9,700 Total costs and expenses $1,839,700 The average shop direct labor rate is $17 per hour. Determine the predetermined shop overhead rate per direct labor hour. Round your answer to the nearest cent. per direct labor hour