document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=61767>Question 61767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #42504 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=42504\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? <BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Sally DATA:<BR>\n" );
document.write( "Time = 4 hrs/job ; Rate = 1/4 job/hr.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "John DATA:<BR>\n" );
document.write( "Time = 6 hrs/job ; Rate = 1/6 job/hr.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Together DATA:<BR>\n" );
document.write( "Time= x hrs/job ; Rate = 1/x job/hr.<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "rate + rate = rate together<BR>\n" );
document.write( "1/4 + 1/6 = 1/x<BR>\n" );
document.write( "(10/24)=1/x<BR>\n" );
document.write( "Invert both sides to get:<BR>\n" );
document.write( "x=24/10= 2.4 hours for them to do the job together.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );