Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due.
Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
Related questions
Question
The Mowry Machine Shop still has five jobs to be processed as of 8 A.M. today (day
30)
at its bottleneck operation. The time since the order arrived, processing time, and promised due dates are given in the following table. The jobs are listed in the order of arrival.|
Job
|
Time Since
Order Arrived
(days ago)
|
Processing
Time (days)
|
Due Date
(days from
now)
|
|
A
|
8
|
3
|
23
|
|
B
|
6
|
10
|
15
|
|
C
|
4
|
8
|
6
|
|
D
|
2
|
4
|
12
|
|
E
|
1
|
6
|
9
|
a. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due.
Using the FCFS (first come, first served) decision rule for sequencing the jobs, the order is:
|
Sequence
|
1
|
2
|
3
|
4
|
5
|
|
Job
|
▼
E
A
C
B
D
|
▼
A
E
B
C
D
|
▼
D
B
C
E
A
|
▼
E
A
B
D
C
|
▼
E
D
A
B
C
|
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