document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1207760>Question 1207760</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?\r<BR>\n" );
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document.write( "Let me see.\r<BR>\n" );
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document.write( "240(0.03) - x = 0.05(240 - x)\r<BR>\n" );
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document.write( "Is my set up equation correct? \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #845815 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52778)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=845815\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "Your intention was to write equation for the conservation of the dissolved salt mass<BR>\n" );
document.write( "in the mixture before and after evaporation.\r<BR>\n" );
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document.write( "Right side of your equation (after evaporation) is written correctly: <BR>\n" );
document.write( "it is 0.05(240-x).\r<BR>\n" );
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document.write( "Left side for the initial salt mass is written incorrectly.<BR>\n" );
document.write( "It should be 0.03*240.\r<BR>\n" );
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document.write( "Therefore, your equation, in whole, is wrong.\r<BR>\n" );
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document.write( "There is one more moment to discuss. It is about units for salt mass.\r<BR>\n" );
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document.write( "In this problem, the mass equation for salt is assumed to be written in kilograms.\r<BR>\n" );
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document.write( "But for it, the volume of water should be in liters.\r<BR>\n" );
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document.write( "So, the conversion factor gallons --> liters should be introduced.\r<BR>\n" );
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document.write( "But after introducing this factor, it will present, as a factor, in both sides <BR>\n" );
document.write( "of the equation, and, therefore, can be reduced and omitted.\r<BR>\n" );
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document.write( "Then the final answer for the volume of water will be in gallons.\r<BR>\n" );
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document.write( "You should keep it in your mind, in order for the entire logical line <BR>\n" );
document.write( "of the solution be correct in your head.\r<BR>\n" );
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document.write( "On similar problems, see the lesson\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/word/mixtures/How-much-water-should-be-evaporated.lesson>How much water must be evaporated</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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