document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107435>Question 107435</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Larry takes 2 hours to paint a house.Willy takes 4 hours to paint the same house.David takes 8 hours to paint that house.How long would it take them to paint the house, working together?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #78202 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=78202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of their rates of painting is the rate of all three<BR>\n" );
document.write( "together<BR>\n" );
document.write( "(1 house/2 hrs) + (1 house/4 hrs) + (1 house/8 hours) = (1 house)/x hours)<BR>\n" );
document.write( "1/2 + 1/4 + 1/8 = 1/x<BR>\n" );
document.write( "4/8 + 2/8 + 1/8 = 1/x<BR>\n" );
document.write( "7/8 = 1/x<BR>\n" );
document.write( "x = 8/7<BR>\n" );
document.write( "So, working together, they take 1 hour 8.5 minutes approx </SPAN>\n" );
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