document.write( "Question 484749: How much water evaporated from 90 mg of a 2% salt solution to produce a 3% salt solution? \n" ); document.write( "
Algebra.Com's Answer #331720 by ankor@dixie-net.com(22740)\"\" \"About 
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How much water evaporated from 90 mg of a 2% salt solution to produce a 3% salt solution?
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\n" ); document.write( "Let x = amt of water required to evaporate
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\n" ); document.write( "Write an amt of salt equation, amt remains the same only the per cent changes
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\n" ); document.write( ".02(90) = .03(90-x)
\n" ); document.write( "1.8 = 2.7 - .03x
\n" ); document.write( ".03x = 2.7 - 1.8
\n" ); document.write( ".03x = .9
\n" ); document.write( "x = \".9%2F.03\"
\n" ); document.write( "x = 30 mg of water has to evaporate
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