Question
A company manufactures three products: A, B, and C. The company currently has an order for three units of product A, 7 units of product
A company manufactures three products: A, B, and C. The company currently has
an order for three units of product A, 7 units of product B, and 4 units of product C.
There is no inventory for any of these products. All three products require special
processing that can be done on one of two machines. The cost of producing each
product on each machine is summarized below:
Cost of Producing a Unit of Product
Machine A B C
1 $13 $ 9 $10
2 $11 $12 $ 8
The time required to produce each product on each machine is summarized below:
Time (Hours) Needed to
Produced a Unit of Product
Machine A B C
1 0.4 1.1 0.9
2 0.5 1.2 1.3
Assume that machine 1 can be used for eight hours and machine 2 can be used for
six hours. Each machine must undergo a special setup operation to prepare it to produce
each product. After completing this setup for a product, any number of that
product type can be produced. The setup costs for producing each product on each
machine are summarized below.
Setup Costs for Producing
Machine A B C
1 $55 $93 $60
2 $65 $58 $75
a. Formulate an ILP model to determine how many units of each product to produce
on each machine to meet demand at a minimum cost.
b. Implement your model in a spreadsheet and solve it.
c. What is the optimal solution?
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