document.write( "Question 471083: how much water must be evaporated from 5 liters of 25% salt solution if the remaining solution must be 50%?
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Algebra.Com's Answer #323140 by Alan3354(69443)\"\" \"About 
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25% of 5 liters = 1.25 liters of salt
\n" ); document.write( "For that to be 50%, there has to be 1.25 liters of water --> 2.5 liters total.
\n" ); document.write( "5 - 2.5 = 2.5 liters to evaporate.
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