document.write( "Question 781010: How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?\r
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Algebra.Com's Answer #475760 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+w+\" = liters of water to be evaporated from solution
\n" ); document.write( "\"+.28%2A60+=+16.8+\" liters of salt in 28% solution
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\n" ); document.write( "\"+16.8+%2F+%28+60+-+w+%29+=+.32+\"
\n" ); document.write( "\"+16.8+=+.32%2A%28+60+-+w+%29+\"
\n" ); document.write( "\"+16.8+=+19.2+-+.32w+\"
\n" ); document.write( "\"+.32w+=+19.2+-+16.8+\"
\n" ); document.write( "\"+.32w+=+2.4+\"
\n" ); document.write( "\"+w+=+7.5+\"
\n" ); document.write( "7.5 liters of water should be evaporated from the solution
\n" ); document.write( "check:
\n" ); document.write( "\"+16.8+%2F+%28+60+-+7.5+%29+=+.32+\"
\n" ); document.write( "\"+16.8+%2F+52.5+=+.32+\"
\n" ); document.write( "\"+16.8+=+.32%2A52.5+\"
\n" ); document.write( "\"+16.8+=+16.8+\"
\n" ); document.write( "OK
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