
Concept explainers
Manufacturing Two departments of a firm, A and B, need different amounts of the same products. The following table gives the amounts of the products needed by the two departments.
SteelPlasticWoodDepartment A302010Department B201020
These three products are supplied by two suppliers, Ace and Kink, with the unit prices given in the following table.
AceKinkSteel300280Plastic150100Wood150200
Use matrix multiplication to find how much these two orders will cost at the two suppliers. The result should be a 2×2
matrix.
From which supplier should each department make its purchase?

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