document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=280103>Question 280103</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 480 dishes that need to be rinsed. John can rinse them in 80 minutes by himself. It will take his friend Bob 120 minutes to rinse these dishes. How long will it take them if they rinse these 480 dishes together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203521 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=203521\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The number <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=480 ALIGN=MIDDLE  ALT=\"480\"   DISABLED_style= \"max-width:90%; height:auto;\" > does not need to enter the calculations<BR>\n" );
document.write( "Just call washing that many dishes 1 job<BR>\n" );
document.write( "In words:<BR>\n" );
document.write( "(John's rate of working) + (Bob's rate of working) = rate of working together<BR>\n" );
document.write( "John's rate = 1 job/80 min<BR>\n" );
document.write( "Bob's rate = 1 job/120 min<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F80+%2B+1%2F120+=+1%2Ft ALIGN=MIDDLE  ALT=\"1%2F80+%2B+1%2F120+=+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=120t ALIGN=MIDDLE  ALT=\"120t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.5t+%2B+t+=+120 ALIGN=MIDDLE  ALT=\"1.5t+%2B+t+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.5t+=+120 ALIGN=MIDDLE  ALT=\"2.5t+=+120\"   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( "It will take them 48 minutes working together </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );