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 minimum cost of food is:
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Correct answer: A. 205
Explanation
At x = 15, y = 5/4: 12 × 15 + 20 × 1.25 = 180 + 25 = ₹205.
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