document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=585850>Question 585850</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many liters of pure alcohol must be added to 10 liters of a 70% solution to obtain a 90% solution?<BR>\n" );
document.write( "I know the answer is 20 liters, but I need help with the equation I would use to figure this out on my own please. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #373498 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=373498\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+ ALIGN=MIDDLE  ALT=\"+x+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = liters of pure alcohol to be added<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.7%2A10+=+7+ ALIGN=MIDDLE  ALT=\"+.7%2A10+=+7+\"   DISABLED_style= \"max-width:90%; height:auto;\" > liters of alcohol in 70% solution<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "( liters of alcohol you end up with ) / ( total liters of solution ) = 90%<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+x+%2B+7+%29+%2F+%28+10+%2B+x+%29+=+.9+ ALIGN=MIDDLE  ALT=\"+%28+x+%2B+7+%29+%2F+%28+10+%2B+x+%29+=+.9+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+7+=+.9%2A%28+10+%2B+x+%29+ ALIGN=MIDDLE  ALT=\"+x+%2B+7+=+.9%2A%28+10+%2B+x+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+7+=+9+%2B+.9x+ ALIGN=MIDDLE  ALT=\"+x+%2B+7+=+9+%2B+.9x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1x+=+2+ ALIGN=MIDDLE  ALT=\"+.1x+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2%2F.1+ ALIGN=MIDDLE  ALT=\"+x+=+2%2F.1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+20+ ALIGN=MIDDLE  ALT=\"+x+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "20  liters of pure alcohol must be added </SPAN>\n" );
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