document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=349097>Question 349097</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If it takes one worker 20 hours to roof a house and another 25 hours how long will it take them to 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 #249521 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=249521\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If it takes one worker 20 hours to roof a house and another 25 hours how long will it take them to work together?<BR>\n" );
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document.write( "1st worker rate = 1/20 job/hr<BR>\n" );
document.write( "---<BR>\n" );
document.write( "2nd worker rate = 1/25 job/hr<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Together rate = 1/x job/hr<BR>\n" );
document.write( "---------------------------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/20 + 1/25 = 1/x<BR>\n" );
document.write( "5x + 4x = 100<BR>\n" );
document.write( "9x = 100<BR>\n" );
document.write( "x = 100/9 = 11 1/9 hrs (time to do the job together)<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );