5. Five jobs are waiting for processing through two work centers. Their processing time (in minutes) at each work center is contained in the table below. Each job requires work center Alpha before work center Beta. According to Johnson's rule, what is the optimum sequence of jobs and the minimum time for completion of all jobs? Job Alpha Beta 20 10 25 35 T 50 20 U 15 35 55 75 R S V 6. Bob Dresser operates a major appliance warranty service center. His operation has two check stations that are required at the end of every repair task performed by his appliance repair staff. These are the Functionality Review (FR) and the Overall Scan (OS). The FR must be performed successfully before the OS is begun. On Friday morning, six repair jobs are completed, awaiting these two inspection activities. Processing times are given in minutes. Job A B D E FR 50 35 25 20 15 10 OS 30 55 20 35 10 25 a. What is the optimal sequence of jobs for the objective of minimizing the total flow time? b. What jobs are being processed at time period 90? c. What is the total flow time of this problem? SUSC CES