A print shop has five large commercial printing jobs to finish. They are trying to decide whether to use the shortest processing time (SPT) or the first-come first-served (FCFS) sequencing rule. Data on estimated processing time (in hours) and time to promised completion (in hours) is as follows (jobs shown in order of arrival):
a.What is the average flow time in hours using the FCFS rule?
b.What is the average job lateness in hours using the FCFS rule?
c.What is the average flow time in hours using the SPT rule?
d.What is the average job lateness in hours using the SPT rule?

Question

A print shop has five large commercial printing jobs to finish. They are trying to decide whether to use the shortest processing time (SPT) or the first-come first-served (FCFS) sequencing rule. Data on estimated processing time (in hours) and time to promised completion (in hours) is as follows (jobs shown in order of arrival):  
a.What is the average flow time in hours using the FCFS rule?
b.What is the average job lateness in hours using the FCFS rule?
c.What is the average flow time in hours using the SPT rule?
d.What is the average job lateness in hours using the SPT rule?

Quizplus · Accepted Answer

The Answer of A print shop has five large commercial printing jobs to finish. They are trying to decide whether to use the shortest processing time (SPT) or the first-come first-served (FCFS) sequencing rule. Data on estimated processing time (in hours) and time to promised completion (in hours) is as follows (jobs shown in order of arrival):  
a.What is the average flow time in hours using the FCFS rule?
b.What is the average job lateness in hours using the FCFS rule?
c.What is the average flow time in hours using the SPT rule?
d.What is the average job lateness in hours using the SPT rule?

A Print Shop Has Five Large Commercial Printing Jobs to Finish