SOLUTION: A solution of 60 Litre contains 40l water and 20 Litre alchohol.How much solution we have to increase so that the precentage of alchohol becomes 50%?

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Question 1043403: A solution of 60 Litre contains 40l water and 20 Litre alchohol.How much solution we have to increase so that the precentage of alchohol becomes 50%?
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
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A solution of 60 Litre contains 40 L water and 20 Litre alcohol.
How much highlight%28cross%28solution%29%29 alcohol we have to highlight%28cross%28increase%29%29 add so that the percentage of alcohol becomes 50%?
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20 L of alcohol. It is clear without solving equations.