1) At Sonali's Machine Shop, five jobs are ready now for dispatching to a machine center. The processing times and due dates for the jobs are given in the table below Jobs Work Time (days) Due Date (days) A 15 38 B 13 28 C 7 20 D 18 50 m 9 15 Using the shortest processing time (SPT) and earliest due date (EDD) dispatching rules: i. Sequence the jobs. (2 marks) ii. Calculate the average flow time. (4 marks) iii. Calculate average job lateness. (4 marks) iv. Calculate the average number of jobs in the machine center. (2 marks) 2) Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is shown in the table below. Each job requires work center Sigma before work center Delta. Job Sigma Delta 40 10 25 30 50 20 35 35 55 15 According to Johnson's rule, what is the optimum sequence of jobs that will minimize completion time of all the jobs? b. A manufacturer has the following five jobs waiting to be processed, as of 8am today (day 23), on a single machine. The day when the job arrived, processing time, and promised due dates are given in the following table. The jobs are listed in the order of arrival. Job Day job arrived Processing time (days) Due date 12 10 45 13 8 36 15 4 42 17 39 22 Using the first come first serve (FCFS) and earliest due date (EDD) dispatching rules