document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1062652>Question 1062652</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much water should be mixed to a 500 mL of 30% solution of alcohol to have a resulting concentration of 20%? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #677610 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=677610\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you have 500 milliliters of 30% alcohol solution.\r<BR>\n" );
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document.write( "you want to add water to this solution so that it becomes a 20% solution.\r<BR>\n" );
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document.write( "the amount of alcohol in the 500 milliliters is .3 * 500 = 150 milliliters.\r<BR>\n" );
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document.write( "you want the same amount of alcohol divided by (500 + x) milliliters to be equal to 20%.\r<BR>\n" );
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document.write( "your equation would be 150 / (500 + x) = .2\r<BR>\n" );
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document.write( "x represents the number of milliliters of water to be added.\r<BR>\n" );
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document.write( "multiply both sides of this equation by (500 + x) and divide both sides of this equation by .2 to get:\r<BR>\n" );
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document.write( "150 / .2 = 500 + x\r<BR>\n" );
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document.write( "simplify to get 750 = 500 + x\r<BR>\n" );
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document.write( "solve for x to get x = 250.\r<BR>\n" );
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document.write( "you need to add 250 milliliters of water to get a solution that is 20% alcohol.\r<BR>\n" );
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document.write( "150 / 500 = .3 = 30%\r<BR>\n" );
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document.write( "150 / 750 = .2 = 20% </SPAN>\n" );
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