Service workshop has four jobs on hand to be processed. The data and processing time for each of the jobs are given below.
|
Job No.
|
Processing time, days
|
Due date
|
|
1
2
3
4
|
3
6
5
9
|
7
9
4
14
|
Considering mean lateness and mean flow time, evaluate the shortest-time rule and least-slack rule and recommend the desirable rule