document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=380641>Question 380641</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ted cleaned the first floor in 4 hours. With Alex helping, they did the second floor in 3 hours. How long would it take Alex to do both floors alone? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #270202 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=270202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ted cleaned the first floor in 4 hours. With Alex helping, they did the second floor in 3 hours. How long would it take Alex to do both floors alone?<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Ted rate: 1/4 job/hr<BR>\n" );
document.write( "Together rate: 1/3 job/hr<BR>\n" );
document.write( "Alex 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( "1/4 + 1/x = 1/3<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Multiply thru by 12x to get:<BR>\n" );
document.write( "3x + 12 = 4x<BR>\n" );
document.write( "x = 12 (time it would take Alex to do the job alone)<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );