A manufacturing company applies factory overhead based on direct labor hours. At the beginning of the year, it estimated that factory overhead costs would be $357,700 and direct labor hours would be 42,500. Actual manufacturing overhead costs incurred were $309,500, and actual direct labor hours were 55,000. What is the predetermined overhead rate per direct labor hour? a. $6.73 b. $10.10 c.$8.42 d. $12.62