Table J.3
Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero.

-Use the information in Table J.3.According to the shortest processing time rule (SPT),which one of the following sequences is most appropriate?
A)A-B-C-D-E-F
B)E-A-B-C-D-F
C)B-C-E-D-F-A
D)D-E-F-A-C-B

Question

Table J.3
Six jobs have just arrived at workstation 017;which has been idle.All the pertinent data are given in the following table.The shop works eight hours per day.It is now time zero.
 
-Use the information in Table J.3.According to the shortest processing time rule (SPT),which one of the following sequences is most appropriate?
A)A-B-C-D-E-F 
B)E-A-B-C-D-F 
C)B-C-E-D-F-A 
D)D-E-F-A-C-B

Quizplus · Accepted Answer

According to the shortest processing time (SPT) rule, we should schedule jobs in ascending order of their processing times. The processing times for each job are given in Table J.3. 
- Job A has a processing time of 20 minutes 
- Job B has a processing time of 30 minutes 
- Job C has a processing time of 40 minutes 
- Job D has a processing time of 50 minutes 
- Job E has a processing time of 60 minutes 
- Job F has a processing time of 70 minutes

Therefore, the sequence that follows the SPT rule is E-A-B-C-D-F, which is option B.

Table J.3 Six Jobs Have Just Arrived at Workstation 017;which Has Been