document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=760013>Question 760013</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me with this problem ): I have no idea where to begin and how to solve this. help! ): ): \r<BR>\n" );
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document.write( "Sarah can build a fence in 9 hours. Joe can do the same in 6 hours. How long would it take them working together, to build the fence?<BR>\n" );
document.write( "t=time together  <BR>\n" );
document.write( "1=the completed job <BR>\n" );
document.write( "t/9=fraction of fence built by Sarah in t hours  <BR>\n" );
document.write( "t/6=fraction of fence built by Joe in t hours.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #462358 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=462358\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sarah's rate of working is:<BR>\n" );
document.write( "( 1 fence built ) / ( 9 hours )<BR>\n" );
document.write( "Joe's rate of working is:<BR>\n" );
document.write( "( 1 fence built ) / ( 6 hours )<BR>\n" );
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document.write( "If you add their rates of working, you get<BR>\n" );
document.write( "their rate working together. <BR>\n" );
document.write( "( Sarah's rate ) + ( Joe's rate ) = ( 1 fence built ) / ( t hours )<BR>\n" );
document.write( "Notice that I want t hours to be the time to build 1 fence<BR>\n" );
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document.write( "The equation is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F9+%2B+1%2F6+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F9+%2B+1%2F6+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+18t+ ALIGN=MIDDLE  ALT=\"+18t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2t+%2B+3t+=+18+ ALIGN=MIDDLE  ALT=\"+2t+%2B+3t+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5t+=+18+ ALIGN=MIDDLE  ALT=\"+5t+=+18+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+3.6+ ALIGN=MIDDLE  ALT=\"+t+=+3.6+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.6%2A60+=+36+ ALIGN=MIDDLE  ALT=\"+.6%2A60+=+36+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "It will take them 3 hrs and 36 min working together<BR>\n" );
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document.write( "t/9=fraction of fence built by Sarah in t hours <BR>\n" );
document.write( "t/6=fraction of fence built by Joe in t hours.<BR>\n" );
document.write( "You can arrive at this by multiplying both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%2F9+%2B+t%2F6+=+1+ ALIGN=MIDDLE  ALT=\"+t%2F9+%2B+t%2F6+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Time is now eliminated and the equation says:<BR>\n" );
document.write( "( Sarah's part ) + ( Joe's part ) = 1 fence built<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3.6%2F9+%2B+3.6%2F6+=+1+ ALIGN=MIDDLE  ALT=\"+3.6%2F9+%2B+3.6%2F6+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+36%2F9+%2B+36%2F6+=+10+ ALIGN=MIDDLE  ALT=\"+36%2F9+%2B+36%2F6+=+10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4+%2B+6+=+10+ ALIGN=MIDDLE  ALT=\"+4+%2B+6+=+10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
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