SOLUTION: paula has 400 milliliters of a solution that is 80% alcohol. she plans to dilute it so that it is only 50% alcohol. how much water should she add to this?

Question 903343: paula has 400 milliliters of a solution that is 80% alcohol. she plans to dilute it so that it is only 50% alcohol. how much water should she add to this?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ml of water to be added
ml of alcohol in 80% solution
-------------------

240 ml of water should be added
check:

OK
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