3 litres of water is added to 15 litres of a mixture of a 20% solution of alcohol in water. The strength of alcohol is now?

Question

Accepted Answer

Alcohol in 15 litres =(20 x 15)/100 litres = 3 litres Now, alcohol in 18 litres = 3 litres ∴ strength of alcohal =(3/18) x 100 % = 162/3%

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