document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838704>Question 838704</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A gardener has a 30 foot by 20 foot rectangular plot of ground. She wants to build a <BR>\n" );
document.write( "brick walkway of uniform width on the border of the plot. If the gardener wants to <BR>\n" );
document.write( "have 400 square feet of ground left for planting, how wide (to 2 decimal places) <BR>\n" );
document.write( "should she build the walkway?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505275 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=505275\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the walkway is of uniform width, then I can say:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30+-+2x+%29%2A%28+20+-+2x+%29+=+400+ ALIGN=MIDDLE  ALT=\"+%28+30+-+2x+%29%2A%28+20+-+2x+%29+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+600+-+40x+-+60x+%2B+4x%5E2+=+400+ ALIGN=MIDDLE  ALT=\"+600+-+40x+-+60x+%2B+4x%5E2+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4x%5E2+-+100x+%2B+200+=+0+ ALIGN=MIDDLE  ALT=\"+4x%5E2+-+100x+%2B+200+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2+-+25x+%2B+50+=+0+ ALIGN=MIDDLE  ALT=\"+x%5E2+-+25x+%2B+50+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+1+ ALIGN=MIDDLE  ALT=\"+a+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+-25+ ALIGN=MIDDLE  ALT=\"+b+=+-25+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+50+ ALIGN=MIDDLE  ALT=\"+c+=+50+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-%28-25%29+%2B-+sqrt%28+%28-25%29%5E2+-+4%2A1%2A50+%29%29+%2F+%282%2A1%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-%28-25%29+%2B-+sqrt%28+%28-25%29%5E2+-+4%2A1%2A50+%29%29+%2F+%282%2A1%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+=+%28+25+%2B-+sqrt%28+625+-+200+%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+25+%2B-+sqrt%28+625+-+200+%29%29+%2F+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+=+%28+25+%2B-+sqrt%28+425+%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+25+%2B-+sqrt%28+425+%29%29+%2F+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+=+%28+25+%2B-+20.6155%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+25+%2B-+20.6155%29+%2F+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+=+%28+25+-+20.6155+%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+25+-+20.6155+%29+%2F+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+=+4.3845%2F2+ ALIGN=MIDDLE  ALT=\"+x+=+4.3845%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+2.11922+ ALIGN=MIDDLE  ALT=\"+x+=+2.11922+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Rounded off, the walkway is 2.12 ft wide<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30+-+2x+%29%2A%28+20+-+2x+%29+=+400+ ALIGN=MIDDLE  ALT=\"+%28+30+-+2x+%29%2A%28+20+-+2x+%29+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30+-+2%2A2.1192+%29%2A%28+20+-+2%2A2.1192+%29+=+400+ ALIGN=MIDDLE  ALT=\"+%28+30+-+2%2A2.1192+%29%2A%28+20+-+2%2A2.1192+%29+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+30+-+4.2384+%29%2A%28+20+-+4.2384+%29+=+400+ ALIGN=MIDDLE  ALT=\"+%28+30+-+4.2384+%29%2A%28+20+-+4.2384+%29+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+25.7616%2A15.7616+=+400+ ALIGN=MIDDLE  ALT=\"+25.7616%2A15.7616+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+406.044+=+400+ ALIGN=MIDDLE  ALT=\"+406.044+=+400+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This is a pretty big error, so check my math,<BR>\n" );
document.write( "but I think my method is OK\r<BR>\n" );
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