document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=460415>Question 460415</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have problems on knowing where to start on story problems and what to do with them. Here is an example.\r<BR>\n" );
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document.write( "How much pure acid must be mixed with 80 liters of 10% acid to get 30% acid? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #315780 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=315780\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x = # liters of pure acid to be added.  Pure acid is 100% acid (This sounds stupid, but it really is important.)  <BR>\n" );
document.write( "Then \r<BR>\n" );
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document.write( "1.00x + 0.10*80 = 0.30(x+80)\r<BR>\n" );
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document.write( "==> x + 8 = 0.30x + 24\r<BR>\n" );
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document.write( "==> 0.70x = 16\r<BR>\n" );
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document.write( "==>  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+22%266%2F7 ALIGN=MIDDLE  ALT=\"x+=+22%266%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters. </SPAN>\n" );
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