CD players are produced on an automated assembly line process. The standard cost of CD players is $150 per unit (labor, $30; materials $70; and overhead, $50). The sales price is $300 per unit.

a. To achieve a 10 percent multifactor productivity improvements by reducing materials costs only, by what percentage must these costs be reduced?

b. To achieve a 10 percent multifactor productivity improvement by reducing; labors costs only; by what percentage must these costs be reduced?

c. To achieve a 10 percent multifactor productivity improvement by reducing overhead costs only; by what percentage must these costs be reduced?