In a factory,machine A has a ten minute set-up time per batch and a two minute per unit run time.Machine B performs the identical function but has a set-up time of thirty minutes and a one minute run time per unit.The factory makes products in batches ranging from one unit to one hundred units.Assuming capacity is not a limitation on either machine,on which batches should machine B be used?
A)All batches should be run on machine B
B)Batches of more than 20 units should be run on machine B
C)Batches of fewer than 80 units should be run on machine B
D)Batches with up to 50 units should be run on machine B
E)No batches should be run on machine B

Question

Quizplus · Accepted Answer

Machine B should be used for batches of more than 20 units because its lower per unit run time becomes advantageous despite the longer set-up time. For batches of 21 units or more, the total time on machine B becomes less than on machine A.

In a Factory,machine a Has a Ten Minute Set-Up Time