Ozark Farms uses at least 800 lb of special feed daily. The special feed is a mixture of corn and soybean meal with the following compositions:

The dietary requirements of the special feed are at least 30% protein and at most 5% fiber. Ozark Farms wishes to determine the daily minimum-cost feed mix.

Formulate and get optimum tableau using TORA to example 2.2-2 page 123 (text book 8th edi.) and:

a) Interpret the dual price of the first constraint.

b) If the minimum daily feed requirement is increased to 900, determine the total cost of the feedstuff.

c) Suppose that the cost per pound of corn is increased to $0.40 while that of soybeans remains unchanged. Determine the associated optimum solution.