Today is the start of Day 4 and John Smith is ready to start scheduling the following jobs. Jobs are assigned a letter of the alphabet, starting with the letter A, based on their arrival.
|
Job
|
Processing Time (in days)
|
Due Date (End of Day)
|
|
A
|
3
|
10
|
|
B
|
10
|
12
|
|
C
|
2
|
25
|
|
D
|
4
|
8
|
|
E
|
5
|
15
|
|
F
|
8
|
18
|
|
G
|
7
|
20
|
a) Sequence these jobs based on the following scheduling rules: Slack and critical ratio (CR)
b) Based on average flow time measured from today (start of Day 4), which of the sequencing rules is preferred?