Question
A chemist prepared 60 grams of a medicine by mixing two ingredients P and 'Q, Rate of 'P' is ₹150 per 10 gm and that of 'Q' is ₹ 500 per 100 gm. 'P' and 'Q are mixed in such a way that the cost of the resulting medicine is ₹12 per gm. What is the quantity of 'P' (in grams) in the medicine?
Solution
P Q 15 5 12 7 3 ATQ- (7+3) =10=60 1=6 Quantity of P =7×6=42gram
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