Question: Jobs A, B, C, and D must be processed through the same machine center. Sequence the following jobs by (a) SPT (b) SLACK. Calculate mean

Jobs A, B, C, and D must be processed through the same machine center. Sequence the following jobs by
(a) SPT
(b) SLACK.
Calculate mean flow time, mean tardiness, and maximum tardiness. Which sequencing rule would you recommend?Why?

Job Processing Time Due Date 20 10 30 15 20 15 50 30

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