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LINEAR PROGRAMMING         515
Let us now solve some of these types of linear programming problems:
Example 6 (Diet problem): A dietician wishes to mix two types of foods in such a
way that vitamin contents of the mixture contain atleast 8 units of vitamin A and 10
units of vitamin C Food ‘I’ contains 2 units/kg of vitamin A and 1 unit/kg of vitamin C Food ‘II’ contains 1 unit/kg of vitamin A and 2 units/kg of vitamin C It costs
Rs 50 per kg to purchase Food ‘I’ and Rs 70 per kg to purchase Food ‘II’