Question: (a) 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

(a) Use Johnson's rule to determine the optimal

(a) 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 in hours are given in the table below. [4] 76415 Job Machine 1 Machine 2 2022 A 10 B 8 15 13 10 13 8 7 9 15 C D E F G 10 25 6 a. What is the optimal sequence? 76413 b. What is the total flow time for this sequence? c. What is the idle time? 2022 W (b) A firm that specializes in desktop publishing for local charities has agreed to take on the following jobs. The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule. [8] (b) A firm that specializes in desktop publishing for local charities has agreed to take on the following jobs. The firm has not decided which dispatching rule to apply in order to prioritize the jobs and fix them into the schedule. [8] 76410 Time Due Date 202/7/22 Job 1 20 25 Job 2 15 20 Job 3 15 Job 4 50 Job 5 30 32 Job 6 42 54 a. Complete the following table. Show your supporting calculations below. 8 25 b. Which dispatching rule has the best score for flow time? c. Which dispatching rule has the best score for work-in-process (jobs in the system)? 76 c d. Which dispatching rule has the best score for lateness? ispat 202 which Dispatching Rule Average Average Job Sequence Number of Flow Average Jobs Time Lateness FCFS EDD SPT LPT K

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