Q20. A diet is to contain atleast 80 units of Vitamin A and 100 units of minerals. Two foods F₁ and F₂ are available costing Rs 5 per unit and Rs 6 per unit respectively. One unit of food F₁ contains 4 units of vitamin A and 3 units of minerals whereas one unit of food F₂ contains 3 units of vitamin A and 6 units of minerals. Formulate this as a linear programming problem. Find the minimum cost of diet that consists of mixture of these two foods and also meets minimum nutritional requirement
