Question

A jar full of whisky contains 40% alcohol A part of this whisky is replaced by another containing 19% alcohol and now the percentage of alcohol was found to be 26% If the quantity of whisky replaced is 'k'.Find 3k

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Solution
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Correct option is A)

By the rule of alligation we have 
So ratio of 1st and 2nd quantities = 7 : 14 = 1 : 2
Required quantity replaced = 

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