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A new cereal,formed of a mixture of bran and rice,contains at least 88 grams of protein and at least 36 milligrams of iron.Knowing that bran contains 80 grams of protein and 40 milligrams of iron per kilogram,and rice contains 100 grams of protein and 30 milligrams of iron per kilogram,find the minimum cost of producing a kilogram of this new cereal if bran costs Rs. 28 per kilogram and rice costs Rs. 25 per kilogram.

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