Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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A company wishes to produce two types of souvenirs: Type A and Type B. Each Type A souvenir will result in a profit of $1, and each Type B souvenir will result in a profit of $1.20. To manufacture a Type A souvenir requires 2 minutes on Machine I and 1 minute on Machine II. A Type B souvenir requires 1 minute on Machine I and 3 minutes on Machine II. There are 3 hours available on Machine I and 5 hours available on Machine II.

(a) The optimal solution holds if the contribution to the profit of a Type B souvenir lies between $  and $  . (Enter your answers from smallest to largest.)

(b) Find the contribution to the profit of a Type A souvenir (with the contribution to the profit of a Type B souvenir held at $1.20), given that the optimal profit of the company will be $208.80.


(c) What will be the optimal profit of the company if the contribution to the profit of a Type B souvenir is $2.00 (with the contribution to the profit of a Type A souvenir held at $1.00)?

 

Expert Solution
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Step 1

Let x is number of Type A souveners produced and y is number of Type B souveners produced.

Then total profit is given by the profit function P(x,y) = x+1.2y

This becomes our objective function which is to be maximized.

Now we restrict x and y to the given inequalities.

Total time taken on machine A = 2x+y \leq  3\times60 = 180 mins  \Rightarrow 2x+y \leq 180

Total time taken on machine B = x+3y \leq 5\times60 = 300 mins  \Rightarrow x+3y \leq 300

Also  x,y \geq 0

The first two inequalities will be towards the side containing origin

Plotting these inequalities on graph, we will get optimal solution to the profit equation

Advanced Math homework question answer, step 1, image 1

 

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