Question: a) Explain the approaches to scheduling through three different process. [9marks) b) The Zaftrix firm wants to consider job sequencing by the shortest processing Time

a) Explain the approaches to scheduling through

a) Explain the approaches to scheduling through three different process. [9marks) b) The Zaftrix firm wants to consider job sequencing by the shortest processing Time (SPT) priority rule. SPT has the sequences D-F-A-E-G-B-C. Apply SPT to the same data and provide a recommendation. Job Sequence Processing Time Flow Time Due Date Job Lateness D 3 3 19 0 F 5 35 0 7 13 23 0 E 11 23 25 0 13 35 16 21 15 49 31 19 17 61 42 20 7 0 m i. What is the average completion time? [2 marks] ii. What is the average number of jobs in system inventory? [2 marks] iii. What is the average job lateness? [2 marks] iv. What is the utilization? [2 marks] V. What recommendation for Zaftrix Firm? [3 marks)

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