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A solution contains 10% of salt by weight. On evaporation 15 litre of water evaporates and now concentration of salt becomes 20 percent. Find the initial quantity of solution

20ltr

30ltr

40ltr

50ltr

Explanation:

Let initial quantity is x litre
final, salt = (x/10)/ (x – 15) = 20/100 = 30ltr

By: Sandeep Dubey

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