Question: The Ledo Tub company manufactures two lines of bathtubs, called model A and Model B. Every tile requires blending a certain amount of steel and zinc; the company has available a total of 25,000 pounds of steel and 6,000 pounds of zinc. Each model A bathtub requires a mixture of 125 pounds of steel and 20 pounds of zinc, and each yields a profit to the firm of $90.Each model B tub produced can be sold at a profit of $70;it in turn requires 100 pounds of steel and 30 pounds of zinc.

a. Use solver to find the best production mix of bathtubs.

b. Are all resources consumed? Explain.

c. If additional steel is available at a price of 75 cents a pound, how much should be produced?

d. How much would the profit on model B tubs have to increase before they would be produced?