A jar full of whisky contains 40% alcohol. A part of this whisky is replaced by

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%. The quantity of whisky replaced is:

Options:

A . 1 3

B . 2 3

C . 2 5

D . 3 5

Answer: Option B

By the rule of alligation, we have:

Strength of first jar
Strength of 2^nd jar
40%
Mean
Strength
26%
19%
7
14

So, ratio of 1^st and 2^nd quantities = 7 : 14 = 1 : 2

Required quantity replaced =
2
3

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