Allocate overhead using a single plantwide rate, multiple department rates, and activity-based costing Big Sound Inc. manufactures two products: receivers and loudspeakers. The factory overhead incurred is as follows: The activity base associated with the two production departments is direct labor hours. The indirect labor can be assigned to two different activities as follows: The activity-base usage quantities and units produced for the two products follow: Required: 1. Determine a plantwide overhead rate based upon direct labor hours. Direct labor overhead rate: s per direct labor hour 6. Determine the total and per-unit cost assigned to each product under activity-based costing. Round the per unit amounts to the nearest whole cent