document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=629240>Question 629240</A>: <I><SPAN STYLE=\"word-break: break-all;\"> tim can paint a house in 20 hours and his friend can paint a house in 30 hours. how long would it take them working together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #396127 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=396127\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x/20+x/30=1<BR>\n" );
document.write( "multiply both sides by 60<BR>\n" );
document.write( "3x+2x=60<BR>\n" );
document.write( "5x=60<BR>\n" );
document.write( "x=12 <BR>\n" );
document.write( "12 hours together.<BR>\n" );
document.write( "check<BR>\n" );
document.write( "12/20+12/30=1<BR>\n" );
document.write( "3/5+2/5=1<BR>\n" );
document.write( "1=1<BR>\n" );
document.write( "ok </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );