Question 28

One litre of water is evaporated from 6 litres of a solution containing 5% salt. The percentage of salt in the remaining solution is

Solution

Let the percentage of salt in the solution be $$x$$%. The amount of salt will be constant. Upon equating

$$5\%of\ 6l\ =\ x\%\ of\ 5l$$

It gives $$x=6$$

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