Sequence the jobs shown below by using the Gantt chart. Assume that the move time between machines in one hour. Sequence the jobs in priority order 1,2,3,4.
Job Work Center/Machine Hours Due Date (days)
1 A/3, B/2, C/2 3
2 C/2, A/4 2
3 B/6, A/1, C/3 4
4 C/4, A/1, B/2 3
What is the makespan and machine idle time?