Product costs and product profitability reports, using a single plantwide factory overhead rate Kao Engines Inc. produces three products-pistons, valves, and cams-for the heavy equipment industry. Kao Engines' production proce uses a single plantwide factory overhead rate based upon direct labor hours to allocate overhead to the three products. The three produ for 2012 are as follows: Budgeted Volume Direct Labor (Units) Hours per Unit Pistons 7,500 0.40 Valves 16,000 0.50 Cams 4,000 0.20 Direct Materials per Selling Price: Unit per Unit $12 $40 6 75 20 60 The estimated direct labor rate is $25 per direct labor hour. Beginning and ending inventories are negligible and are, thus, assumed to zero. The budgeted factory overhead for Kao Engines is $377,600. If required, round all per unit answers to the nearest cent. a. Determine the plantwide factory overhead rate. per dih b. Determine the factory overhead and direct labor cost per unit for each product. Direct Labor Hours Per Unit Pistons 0.40 dihi Factory Overhead Cost Per Unit Direct Labor Cost Per Unit