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Reshma wishes to mix two types of food P and Q in such a way that the vitamin contents of the mixture contain at least 8 units of vitamin A and 11 units of vitamin B. Food P costs Rs 60 / kg and Food Q costs Rs 80 / kg. Food P contains 3 units/kg

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The correct Answer is:
Min.cost = ₹ 160 at all points lying on the line segment joining `((8)/(3),0)` and `(2, (1)/(2))`.
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