(Parts a, b, and c) + d- Compute the unit worth of resource 1 (defined by 1^st constraint) and the range of its validity. then e- Compute the unit worth of resource 2 (defined by 2^nd constraint) and the range of its validity.

kept constant at its present value. (c) If the unit revenues cA and cB are changed simultaneously to $5 and $4, respectively, determine the new optimum solution. (d) If the changes in (c) are made one at a time, what can be said about the optimum solution? 3-66. In the Reddy Mikks model of Example 2.2-1: (a) Determine the range for the ratio of the unit revenue of exterior paint to the unit revenue of interior paint. (b) If the revenue per ton of exterior paint remains constant at $6000 per ton, determine the maximum unit revenue of interior paint that will keep the present optimum solution unchanged. (c) If for marketing reasons the unit revenue of interior paint must be reduced to $2500. will the current optimum production mix change? -67. In Problem 3-64: (a) Determine the optimality range for the unit revenue ratio of the two types of hats that will keen the current ontimum unchanoed kept constant at its present value. (c) If the unit revenues cA and cB are changed simultaneously to $5 and $4, respectively, determine the new optimum solution. (d) If the changes in (c) are made one at a time, what can be said about the optimum solution? 3-66. In the Reddy Mikks model of Example 2.2-1: (a) Determine the range for the ratio of the unit revenue of exterior paint to the unit revenue of interior paint. (b) If the revenue per ton of exterior paint remains constant at $6000 per ton, determine the maximum unit revenue of interior paint that will keep the present optimum solution unchanged. (c) If for marketing reasons the unit revenue of interior paint must be reduced to $2500. will the current optimum production mix change? -67. In Problem 3-64: (a) Determine the optimality range for the unit revenue ratio of the two types of hats that will keen the current ontimum unchanoed