Single plantwide factory overhead rate Platzer Instruments inc. makes three musical instruments: flutes, clarinet5, and oboes. The budgeted factory overhead cost is $126,480. Overhead is allocated to th three products on the basis of direct labor hours. The products have the following budgeted production volume and direct labor hours per unit: If required, round all per unit answers to the nearest cents a. Determine the single plantwide overhead rate. per direct labor hour