Amalgamated Skyhooks, Inc., has an order for 200 Model SKY3 Skyhooks for delivery on day 200. The Skyhook consists of three parts. Components B and C form subassembly A. Subassembly A and component D form the final assembly. Following are the work centers and times for each operation. Using a piece of graph paper, draw a backward schedule based on the following. When must component C be started to meet the delivery date?

a. Only one machine is assigned to each operation.

b. The factory works one 8-hour shift, 5 days a week.

c. All parts move in one lot of 200.

Part D B Subassembly A Final Assembly SKY3 Operation 10 20 10 20 10 20 Standard Time (days) 5 7 5 7 12 5 7 5