Exercise 9-46 (Static) Activity-Based versus Traditional Costing (LO 9-3, 4, 5) Isadore's Implements, Inc., manufactures pens and mechanical pencils often used for gifts. Overhead costs are currently allocated using direct labor-hours, but the controller has recommended an activity-based costing system using the following data. Cost Driver Volume Pencils Pens 20 30 Activity Setting up Inspecting Packing and shipping Total overhead Cost Driver Number of setups Number of parts Number of boxes shipped Cost $ 72,000 21,600 43,200 $ 136,800 45,000 75,000 Required: a. Compute the amount of overhead to be allocated to each product under activity-based costing. b. Compute the amount of overhead to be allocated to each product using labor-hours as the allocation base. Assume that the number of labor-hours required to assemble each box is 0.1 for pencils and 0.2 for pens and that 45,000 boxes of pencils and 75,000 boxes of pens were produced during the period