week4 assignment 06032018

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Using the information presented in the following table, identify the processing sequence that would result using (a) first come, first served (FCFS), (b) shortest processing time (SPT), (c) earliest due date (EDD), and (d) critical ratio (CR). For each method, determine (a) average job flow time, (b) average job tardiness, and (c) average number of jobs in the system. Jobs are listed in order of arrival. (Hint: First determine the total job time for each job by computing the total processing time for the job and then adding in the setup time. All times and due dates are in hours.)

Job

Processing Time per Unit

Units per Job

Setup Time

Due Date

a

.14

45

0.7

4

b

.25

14

0.5

10

c

.10

18

0.2

12

d

.25

40

1.0

20

e

.10

75

0.5

15

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