SOLUTION: three liters of alcohol water mixture contains 40% alcohol. how much alcohol must be evaporated and replaced by water in order to produce 30% alcohol mixture?
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Question 1008876: three liters of alcohol water mixture contains 40% alcohol. how much alcohol must be evaporated and replaced by water in order to produce 30% alcohol mixture? Answer by josgarithmetic(39617) (Show Source):
You can put this solution on YOUR website! v, the amount of alcohol to be removed and replaced with v volume of water. Note, the water
does not contribute any quantity of alcohol, being 0% alcohol. The volume of the solution
after evaporation and addition will still be the same 3 liters.
Using fractions instead of percents,
and understand the starting amount of alcohol was 0.4*3 LITERS, and v liters of alcohol
to remove is as 100% alcohol; the starting solution is 40% alcohol.
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