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A jar full of whisky contains 40% alcoho...

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 (a) `1/3` (b) `2/3` (c) `2/5` (d) `3/5`

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The correct Answer is:
`2/3`
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