Question 1014182
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How much water must be evaporated from a 20 liter 32% if the desired concentration is 50%?
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See the lesson <A HREF=http://www.algebra.com/algebra/homework/word/mixtures/Mixture-problems.lesson>Mixture problems</A> in this site, Problem 2.


Consider it as a sample.


Read it attentively and then solve your problem by substituting your data.