Two jobs (J1 and J2) are scheduled on two workcenters (WCA and WCB). J1 starts at time 0 on WCA and finishes on that workcenter at time 5. J2 starts at time 0 on WCB and finishes at time 3. J2 then starts on WCA at time 5 and finishes at time 9. What is the makespan of these jobs?
A) 0
B) 5
C) 9
D) Cannot be determined from the information given

Question

Quizplus · Accepted Answer

The makespan is the time from the start of the first job to the completion of the last job. In this case, the first job (J1) starts at time 0 and finishes on WCA at time 5. The second job (J2) starts on WCB at time 0 and finishes on WCA at time 3. Since J1 has already finished on WCA at time 5, J2 can start immediately and finish at time 9. Therefore, the makespan is 9.

Two Jobs (J1 and J2) Are Scheduled on Two Workcenters