Single plantwide factory overhead rate Platzer Instruments Inc, makes three musical instruments: flutes, clarinet5, and oboes. The budgeted factory overhead cost is $189,240. Overhead is allocated to the 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 cent. a. Determine the single plantwide overhead rate. Der direct labor hour b. Use the overhead rate in (a) to determine the amount of total and per-unit overhead allocated to each of the three products