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A jar full of whisky contains $40\%$ of 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 :

1. $\frac{2}{5}$
2. $\frac{1}{3}$
3. $\frac{2}{3}$
4. $\frac{3}{5}$

1
249 views
2
400 views