Refer to the data in PE 18-7. Using the following additional information, compute the cost of materials to be used in the coming period. (Assume no beginning or ending direct materials inventory.)

Wood requirement per unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 board feet

Aluminum requirement per unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 square feet

Cost of wood (per board foot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $10

Cost of aluminum (per square foot) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $15