68. A jar full of whisky
contains 40% alcohol. A part of this whisky is replaced by another containing
19% alcohol and now the percentage uf alcohol was found to be 26%. The quantity
of whisky replaced is. [Hotel Mgt 1991]
A.1/3
C.2/5
B.2/3
D.3/5
Answer: 2/3
Explanation: Ratio of first and second = 7 : 14 =
1 : 2
Required quantity 2/3
