Alcohol and water in two vessels A and B are in the ratio 5 : 3 and 5 : 4 respectively. In what ratio, the liquid of both the vessels be mixed to obtain a new mixture in vessel C in the ratio 7 : 5 ?

Answer: Option A

Solution

Answer: Option A

Solution:

According to the question,
$$\begin{array}{rl}& \text{Alcohol}\text{Water}\\ & \text{Vessel A}5:\text{3}\\ & \text{Vessel B}5\text{:}4\end{array}$$
Now using alligation,