3.(10 pts.) Five jobs must be processed by the same two machines. Each job must be processed first by machine 1, then by machine 2. The same job sequence must be used on each machine. Times for the operations for each job on each machine are as follows: Job 2 Job 1 5 2 Machine 1 Machine 2 1 Job 3 9 7 Job 4 3 8 Job 5 10 4 6 Find a sequence that will minimize the completion time of the last job on machine 2, and illustrate the resulting schedule with a Gantt chart