3. The operation manager of a body and paint shop has five cars to schedule for repair. He would like to minimize throughput time to complete all work on these cars. Each car requires body work prior to painting. The estimates of the times required to do the body and paint work on each are listed below. Car A B Body Work (Hours) 12 7 9 3 12 Paint (Hours) 6 4 10 4 5 D E (a) Determine the job sequence using the Johnson rule. (b) How much idle time is related to painting? (use a chart to find out the idle time for painting)