A sugar solution of 3 litres contain 60% sugar. One litre of water is added to this solution. Then the percentage of sugar in the new solution is :-

Answer: Option B

Solution

Answer: Option B

Solution:

Percentage of sugar in 4 litres mixture.
$$\begin{array}{rl}& =\frac{9}{5\times 4}\times 100\\ & =45\%\end{array}$$