Question

How much water should be mixed
With 12ml of Alcohol so as to obtain 12 persent alcohol solution.?

Answer 1

Ans: Let the volume of water to be mixed be x ml Total volume of the mixture = (x+12) ml If this is to be 12% alcohol solution, that means that the mixture contains 12% of alcohol by volume. We know that the mixture has 12 ml of alcohol. So, we get the equation - 12/(x+12) = 12% or 12/100 Simplifying Cross multiplying x = 88 ml Need to add 88 ml of water to make it a 12% alcohol solution.


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Answer 2

Let the volume of water to be mixed be x ml Total volume of the mixture = (x+12) ml If this is to be 12% alcohol solution, that means that the *mixture* contains 12% of alcohol by volume. We know that the mixture has 12 ml of alcohol. So, we get the equation - 12/(x+12) = 12% or 12/100 Simplifying Cross multiplying x = 88 ml Need to add 88 ml of water to make it a 12% alcohol solution. :)