document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1039721>Question 1039721</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show all pertinent solution:<BR>\n" );
document.write( "A student can do an encoding job for 10 minutes while another student can do the same job in 20 minutes. How long will it take them to finish the job if they work together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #654470 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=654470\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1st student's rate of working:<BR>\n" );
document.write( "( 1 job ) / ( 10 min )<BR>\n" );
document.write( "2nd student's rate of working:<BR>\n" );
document.write( "( 1 job ) / ( 20 min )<BR>\n" );
document.write( "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;\" > = time in minutes for them <BR>\n" );
document.write( "to do the job working together<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "Add their rates of working to get their rate<BR>\n" );
document.write( "working together<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F10+%2B+1%2F20+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F10+%2B+1%2F20+=+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=+20t+ ALIGN=MIDDLE  ALT=\"+20t+\"   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+t+=+20+ ALIGN=MIDDLE  ALT=\"+2t+%2B+t+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3t+=+20+ ALIGN=MIDDLE  ALT=\"+3t+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+6.667+ ALIGN=MIDDLE  ALT=\"+t+=+6.667+\"   DISABLED_style= \"max-width:90%; height:auto;\" > min<BR>\n" );
document.write( "Convert <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.667+ ALIGN=MIDDLE  ALT=\"+.667+\"   DISABLED_style= \"max-width:90%; height:auto;\" > min to seconds<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.667%2A60+=+40+ ALIGN=MIDDLE  ALT=\"+.667%2A60+=+40+\"   DISABLED_style= \"max-width:90%; height:auto;\" > sec<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Working together, they finish the job<BR>\n" );
document.write( "in 6 min 40 sec<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );