​aaron, inc. estimates direct labor costs and manufacturing overhead costs for the coming year to be​ $750,000 and​ $550,000, respectively. aaron allocates overhead costs based on machine hours. the estimated total labor hours and machine hours for the coming year are​ 18,000 hours and​ 7,000 hours, respectively. what is the predetermined overhead allocation​ rate? (round your answer to the nearest​ cent.)