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You have two two-liter bottles, one (marked W) containing one liter of pure water and one (marked A) containing one liter of pure alcohol. The two things you can do are to pour liquid from either bottle down the drain or pour liquid from one bottle into the other, but you must always keep at least one liter of liquid in bottle A.

What is the minimum alcohol concentration that can be achieved in bottle A? Assume that there is no volume change on mixing water and alcohol.

(No Solution Yet, 6 Comments) Submitted on 2025-02-03 by K Sengupta   
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