Question: Solve the linear programming model formulated in Problem 12 for United Aluminum Company graphically. a. How much extra (i.e., surplus) high-, medium-, and low-grade aluminum

Solve the linear programming model formulated in Problem 12 for United Aluminum Company graphically.

a. How much extra (i.e., surplus) high-, medium-, and low-grade aluminum does the company produce at the optimal solution?

b. What would be the effect on the optimal solution if the cost of operating mill 1 increased from

$6,000 to $7,500 per day?

c. What would be the effect on the optimal solution if the company could supply only 10 tons of high-grade aluminum?

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