e At the beginning of the year Grey Corporation estimated the following Overbead 5 640,000 $ 480,000 Direct labor hours Machine bours 80,000 hrs. 20,000 hrs 4.000 hrs. 10,000 hrs Grey uses departmental overhead rates. In the assembly department, overhead is applied on direct labor hours. In the packaging department, overbead is applied on the basis of machin hours. Actual data for the month of April are as follows 5 42.759 5 20.400 Overhead Direct labor hours Machine hours Required A.) Calculate the predetermined overhead rate for the assembly and packaging departments. 5,000 hrs. 2.000 hrs 600 hrs. 1.600 hrs. B.) Calculate the overhead applied to production in each department for the month of April