A job shop has 6 orders to be completed by a single turning centre. The processing times and due dates are as follows:
|
Job
|
1
|
2
|
3
|
4
|
5
|
6
|
|
Processing time
|
3
|
2
|
9
|
4
|
2
|
4
|
|
Due date
|
17
|
21
|
5
|
12
|
15
|
24
|
Assume that all orders are ready for processing. Give a production schedule that minimizes the average flow time. Compare this schedule with one that minimizes tardiness (lateness)