under a traditional job costing system, Marty understood that his primary product included direct costs of $8.00 per unit and indirect costs of $4.00 per unit. The activities used to generate that product involved machine setup, material moves, and assembly. Using ABC, MArty's MOH costs allocated to his primary product are $2.50 per unit. Calculate and compare the total product cost per unit under the traditional method and the ABC method. If Marty currently sells this product for $16 per unit, what gross margin percentage is he generating under each method