Problema Solution

National Business Machines manufactures x model A fax machines and y model B fax machines. Each model A costs $100 to make, and each model B costs $150. The profits are $30 for each model A and $35 for each model B fax machine. If the total number of fax machines demanded per month does not exceed 2500 and the company has earmarked no more than $600,000/month for manufacturing costs, how many units of each model should National make each month to maximize its monthly profit?

(x, y) =

Answer provided by our tutors

The constrains are:


x + y <= 2500

100x + 150y <= 600,000

x >= 0

y >= 0


The objective function is p(x , y) = 30x + 35y. We need to find the maximum for p(x , y).


click here to see the graph of the system of inequalities and determine the corner points


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the corner points are (2500, 0) and (0, 2500)


p(2500, 0) = 30*2500 = $75,000


p(0, 2500) = 35*2500 = $87,500


(x , y) = (0, 2500)


To maximize the profit National Business Machines should make 2500 units of model B.