Exercise 4-9 a-b (Video) Air United, Inc. manufactures two products: missile range instruments and space pressure gauges. During April, 50 range instruments and 200 pressure gauges were produced, and overhead costs of $84,620 were estimated. An analysis of estimated overhead costs reveals the following activities. Activities Cost Drivers 1. Materials handling Number of requisitions 2. Machine setups Number of setups 3. Quality inspections Number of inspections The cost driver volume for each product was as follows. Cost Drivers Number of requisitions Number of setups Number of inspections Total Cost $32,640 29,100 22,880 $84,620 Instruments Gauges Total 410 610 1,020 210 275 485 275 245 520 Determine the overhead rate for each activity. Overhead Rate Materials handling per requisition $ Machine setups per setup $ Quality inspections per inspection $