document.write( "Question 379495: How much water must be evaporated from 5 liters of a 30% salt solution to obtain a 50% salt solution?
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Algebra.Com's Answer #269450 by robertb(5830) $\"\"$ $\"About$

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0.30*5 - 0.00x = 0.50(5-x),
\n" ); document.write( "1.5 = 2.5 - 0.50x,
\n" ); document.write( "-1 = -0.50x,
\n" ); document.write( "x = 2 liters, the amount of water that should be evaporated. \n" ); document.write( "

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