Five jobs are waiting at a work center.The required processing times and due dates are givenas follows:

Jobs: A BC D E

Processing Time (days):122585030

Due Date (days from now)30507090110

(Assume current day is zero.)

a) Determine the job processing sequence based on SPT (Shortest Processing Time first) rule. Calculate the Average Job Flow Time and Average Job Lateness for your sequencing.

b) Determine the job processing sequence based on EDD (Earliest Due Date first) rule. Calculate the Average Job Flow Time and Average Job Lateness for your sequencing.

c) Based on the results in (a) and (b), if the manager wants to minimize the average flow time, which dispatching rule would you recommend to him?And if the manager now prefers to minimize average job lateness, would you like to change your recommendation above?Why?