Question: DoorFrame makes metal door frames. Preparing the hinge upright is a two-step operation. First the upright is formed through a rolling mill (machine 1), then

DoorFrame makes metal door frames. Preparing the hinge upright is a two-step operation. First the upright is formed through a rolling mill (machine 1), then the hinge pattern is embossed using a press (machine 2). Five different types of hinge uprights are made for different customers. Processing times (in hours) for the five current jobs (batches of the different types) on each machine are given below.

Find an optimal schedule on each machine and the makespan of this schedule?

DoorFrame makes metal door frames. Preparing the

Machines Jobs 3 5 1 5 2 2 1 4 3 1 2 9 7 10 4 6

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