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4. The following four jobs must be processed through a three-machine flow shop. Job Machine C3 A B 1 5 2 2 6 4

4. The following four jobs must be processed through a three-machine flow shop. Job Machine C3 A B 1 5 2 2 6 4 5 3 7 5 4 6 3 2 4 Find the optimal sequencing of the jobs to minimize the makespan. What is the makespan at the optimal solution? What is the average flow time of the jobs? Draw a Gantt chart illustrating your solution. (25 pts)

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