Discuss the below:
Q: Process times for all jobs are one hour. Changeovers between families require four hours. Thus, the completion time for job 1 is 5, for job 2 is 6, for job 3 is 11, and so on.
Family Due
Job Code Date
1 1 5
2 1 6
3 2 12
4 2 13
5 1 13
6 1 19
7 1 20
8 2 20
9 2 26
10 1 28
a) Compute the total tardiness of the sequence.
b) How many possible sequences are there?
c) Find a sequence with no tardiness.