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1. 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 :-

A. 30%

B. 45%

C. 50%

D. 60%

Solution:

Percentage of sugar in 4 litres mixture.

\begin{aligned} = \frac{9}{5 \times 4} \times 100 \\ = 45 % \end{aligned}

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