The following table shows orders to be processed at a machine as of 8 a.m., Monday. Jobs are listed in the order of arrival.
a. Determine the processing sequence using each of these priority rules: (1) CR, (2) MST, (3) SPT, (4) EDD.
b. Determine tire performance of each rule using (1) average flow time, (2) average days late.
c. Is one rule superior to the others?

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Processing Due Date Job Time (days (days) 20 18 25 17 9