Calculating Manufacturing Overhead Rates Windsor Company, accumulated the following data for 2017: Milling Department manufacturing overhead Finishing Department manufacturing overhead Machine hours used Milling Department Finishing Department. Labor hours used Milling Department Finishing Department $327,600 $134,400 9,000 hours 2,000 hours 1,000 hours 1,000 hours In the Milling department, grooves are cut into aluminum and steel rods using computer-controlled equipment. In the Finishing department, the rods are individually cleaned and polished. a. Calculate the plantwide manufacturing overhead rate using machine hours as the allocation base. $ 0 per machine hour b. Calculate the plantwide manufacturing overhead rate using direct labor hours as the allocation base. $ 0 per direct labor hour c. Calculate department overhead rates using machine hours in Milling and direct labor hours in Finishing as the allocation bases. per Milling Dept. machine hour $ 0 $ 0 per Finishing Dept. direct labor hour d. Calculate department overhead rates using direct labor hours in Milling and machine hours in Finishing as the allocation bases. $0 per Milling Dept. direct labor hour $ 0 per Finishing Dept. machine hour