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A person wants to decide the constituents of a diet which will fulfill his daily requirements of proteins, fats and carbohydrates at the minimum cost. The choice is to be made from four different types of foods. The yields per unit of these foods are given in table 2.2. TABLE 2.2 Food type Cost per unit Proteins 3 Yield per unit Fats Carbohydrates 2 1 6 2 4 2 4 45 40 85 4 4 65 3 8 7 7 6 5 Minimum requirement 800 200 700 Formulate linear programming model for the