document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1018913>Question 1018913</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Fred can mow a lawn in 120 minutes. Rocky can mow the same lawn in 80 minutes. How long does it take for both Fred and Rocky to mow the lawn if they are working together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #634913 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=634913\">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=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = their time in minutes working together<BR>\n" );
document.write( "Add their rates of working to get their rate working together<BR>\n" );
document.write( "Fred's rate:<BR>\n" );
document.write( "[ 1 lawn ] / [ 120 min ]<BR>\n" );
document.write( "Rocky's rate:<BR>\n" );
document.write( "[ 1 lawn ] / [ 80 min ]<BR>\n" );
document.write( "Rate working together:<BR>\n" );
document.write( "[ 1 lawn ] / [ t min ]<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F120+%2B+1%2F80+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F120+%2B+1%2F80+=+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=+240t+ ALIGN=MIDDLE  ALT=\"+240t+\"   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+=+240+ ALIGN=MIDDLE  ALT=\"+2t+%2B+3t+=+240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+5t+=+240+ ALIGN=MIDDLE  ALT=\"+5t+=+240+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+48+ ALIGN=MIDDLE  ALT=\"+t+=+48+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "It takes them 48 min to mow <BR>\n" );
document.write( "lawn working together<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F120+%2B+1%2F80+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F120+%2B+1%2F80+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F120+%2B+1%2F80+=+1%2F48+ ALIGN=MIDDLE  ALT=\"+1%2F120+%2B+1%2F80+=+1%2F48+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F30+%2B+1%2F20+=+1%2F12+ ALIGN=MIDDLE  ALT=\"+1%2F30+%2B+1%2F20+=+1%2F12+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F15+%2B+1%2F10+=+1%2F6+ ALIGN=MIDDLE  ALT=\"+1%2F15+%2B+1%2F10+=+1%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.0667+%2B+.1+=+.1667+ ALIGN=MIDDLE  ALT=\"+.0667+%2B+.1+=+.1667+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.1667+=+.1667+ ALIGN=MIDDLE  ALT=\"+.1667+=+.1667+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );