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Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before

Use Johnson's rule to determine the optimal sequencing for the five jobs to be processed on two machines in a fixed order (Machine 1 before Machine 2). The processing times are given in the table below.

Job

Machine 1

Machine 2

C

10

11

D

8

17

E

14

9

F

13

7

G

10

8

What is the optimal sequence?

What is the total flow time for this sequence?

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