The Grebski Auto Repair Shop uses a shop floor control system based on forward scheduling to determine auto completion dates for their customers, and to determine when to release a car to the shop for repairing. The control system generates a Gantt chart on a daily basis, along with a number of statistics. The shop is open for business eight hours per day, and there are three repair centers in the shop. Activity to be scheduled for the next few days is shown below. The jobs are listed in order of customer arrival, and are scheduled for processing on a first-come-first-served basis. Job transfer times are zero. Determine what the due dates should be, along with determining the makespan , the average flowtime , and the average queue time.

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Repair center/Est. Job Hours A/1, B/3, C/2