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Calculating Activity-Based Costing Overhead Rates Assume that manufacturing overhead for Glassman Company in the previous exercise consisted of the following activities and costs: The following additional data waru nrovidad far Iah Q.14. Required Calculate the cost per unit of activity driver for each activity cost category. Actuty Rete Calculate the cost of Job 845 using ABC to assign the overhead costs. Calculate the cost of Job 845 using the company-wide overhead rate based on machine hours calculated in P5-IA(a). Calculate the cost of Job 845 using a machine hour departmental overhead rate for the Milling Department and a direct labor hour overhead rate for the Finishing Department (see P5-1A (c))