Activity-based costing versus traditional overhead allocation methods - Galvaset Industries manufactures and sells custom-made windows. Its job costing system was designed using an activity-based costing approach. Direct materials and direct labor costs are accumulated separately, along with information concerning three manufacturing overhead cost drivers (activities). Assume that the direct labor rate is $20 per hour and that there were no beginning inventories. The following information was available for 2010, based on an expected production level of 50,000 units for the year, which will require 200,000 direct labor hours: _____________________________________________________________ Activity Budgeted Cost Driver Used Cost (Cost Driver) Costs for 2010 as Allocation Base Allocation Rate Materials $325,000 Number of parts used 0.25/unit Handling Cutting & 2,340,000 Number of parts used 1.80/part lathe work Assembly & 5,000,000 Direct labor hours 25/hour inspection _____________________________________________________________ The following production, costs, & activities occurred during the month of March: _____________________________________________________________ Units Direct Number Direct Produced Materials Costs of Parts Used Labor Hours 3,800 $142,000 83,600 17,180 ____________________________________________________________ Required: a. Calculate the total manufacturing costs and the cost per unit of the windows produced during the month of March (using the activity-based costing approach). b. Assume instead that Galvaset Industries applies manufacturing overhead on a direct labor hours basis (rather than using the activity-based costing system previously described). Calculate the total manufacturing cost and the cost per unit of the windows produced during the month of March. (Hint: You will need to calculate the predetermined overhead application rate using the total budgeted overhead costs for 2010.) c. Compare the per unit cost figures calculated in parts a and b. Which approach do you think provides better information for manufacturing managers? Explain your answer.
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