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  1. 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. 2
      5
    2. 1
      3
    3. 2
      3
    4. 3
      5
Correct Option: C

Using the method of alligation ,
Here , C1 = 40% , C2 = 19% and Mean cost Price ( M ) = 26%
Required ratio = ( M - C2 ) : ( C1 - M ) = ( 26 - 19 ) : ( 40 - 26 )
Required ratio = 7 : 14 = 1 : 2

∴ Required quantity =
2
3



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