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(a) The table below displays the processing time for eight projects Project Proc

ID: 332017 • Letter: #

Question

(a) The table below displays the processing time for eight projects Project Processing time (hours) P1 P2 P3 P4 P5 P6 P7 P8 4 0.5 Please use the Shortest Processing Time rule to sequence the 8 projects. (0.25 points) Project P1 P2 P3 P4 P5 P6 P7 P8 Sequence Using the Shortest Processing Time rule, the average flow time of these 8 project- Please show your analysis below (0.25 points) hours. (b) Processing times and weights for five jobs are shown in the table below. Job Processing Time (minutes) Weights 4 1.5 1.25 0.5 Please use the Weighted Shortest Processing Time (WSPT) rule to sequence the 5 jobs. (0.5 points) Job Sequence Show your analysis for the sequence below:

Explanation / Answer

(a)

  

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Mean Flow time = 0.5+1.5+2.5+4.5+7.5+11.5+16.5+22.5 /8 = 8.375

(b)

Project sequence according to the WSPT

Project 1 2 3 4 5 6 7 8 Sequence 6 2 4 5 8 7 3

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