Question

A solution of sugar and water contains 20% sugar by weight. From this solution, if 25 kg of water is evaporated, the mixture now contains 25% of sugar. Find he quantity of sugar in the solution initially.

Answer 1

Ans: 4.8% 

Solution:

The quantity of sugar in the original 6 litres of solution = The quantity of sugar in the remaining part.... 6 - 1 = 5 litres.

So, 

=> 4% of 6 = x% of 5

=> 4/100 * 6 = x/100 * 5

=> x = 4 * 6 / 5

=> x = 4.8
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