document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=123566>Question 123566</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How much acid must be added to 40ml of a 20% solution to increase it to a 28% solution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #90641 by </B><A HREF=/tutors/aboutme.mpl?userid=chitra><B>chitra(359)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=chitra><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=90641\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  assuming 100% acid.... \r<BR>\n" );
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document.write( "{100% }* x + [ 20% ]* (40 ml ) = ( 28 %) ( 40 + x ) \r<BR>\n" );
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document.write( "where x = amount of acid in ml....\r<BR>\n" );
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document.write( "40 + x = total ml of 28% solution ...\r<BR>\n" );
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document.write( "convert % to decimal.... [ move decimal 2 times left on each ...]\r<BR>\n" );
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document.write( "1x + .20 * 40 = .28 ( 40 + x)\r<BR>\n" );
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document.write( "x + 8 = 11.2 + .28x\r<BR>\n" );
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document.write( ".72x = 3.2 ..... x = 4.44 ml </SPAN>\n" );
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