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 Activity Setting up Inspecting Packing and shipping Total overhead Cost Driver Cost 72,000 21,600 43,200 $136,800 Pens Number of setups Number of parts Number of boxes shipped 20 30 45,000 75,000 Required a. Compute the amount of overhead to be allocated to each product under activity-based costing. (Do not round intermediate calculations.) Pencils Pens 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. (Do not round intermediate calculations.) Overhead Pencils Pens