document.write( "Question 273772: How many liters of water must be evaporated from 10 L of a 40% salt solution to produce a 50% solution? \n" ); document.write( "
Algebra.Com's Answer #199957 by ankor@dixie-net.com(22740)\"\" \"About 
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How many liters of water must be evaporated from 10 L of a 40% salt solution to produce a 50% solution?
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\n" ); document.write( "Let x = amt of water to evaporated
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\n" ); document.write( "Write an amt of salt equation (amt of salt remains unchanged)
\n" ); document.write( ".4(10) = .5(10-x)
\n" ); document.write( "4 = 5 - .5x
\n" ); document.write( ".5x = 5 - 4
\n" ); document.write( ".5x = 1
\n" ); document.write( "x = 2 Liters to be evaporated
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