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The operations manager of a body and paint shop has five cars to schedule for repair....

The operations manager of a body and paint shop has five cars to schedule for repair. He would like to minimize the throughput time (makespan) 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 as follows:

Car

Body Work (Hours)

Paint (Hours)

A

8

7

B

9

4

C

7

9

D

3

4

E

12

5

a. use Johnson's rule to sequence these five jobs for minimum total duration Show

b. how much idle time does painting work have?

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