Directions (Q91–95): Food X contains 6 units of vitamin D and 7 units of vitamin E per gram and costs ₹12 per gram. Food Y contains 8 units of vitamin D and 12 units of vitamin E per gram and costs ₹20 per gram. The daily minimum requirements of vitamins D and E are 100 units and 120 units. Let x and y be the grams of food X and Y.
The cost function of total food is:
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Correct answer: C. Z=12 x+20 y
Explanation
Food X costs ₹12 per gram and Y ₹20 per gram: minimize Z = 12x + 20y.
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