document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=200990>Question 200990</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If it takes Sally 4 hours to paint a house and John 6 hours to paint the same house, how long does it take 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 #151248 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=151248\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Rate  of  Sally = 1 house / 4 hrs  = .25 House / hr<BR>\n" );
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document.write( "Rate  of  John  =  1 house / 6 hrs = .167 house / hr<BR>\n" );
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document.write( "combined  rate  is  .417 house  per  hr,,,,(.25 +.167)<BR>\n" );
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document.write( "Rate  * Time  = Distance<BR>\n" );
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document.write( ".417  house / hr * t hrs = 1  house<BR>\n" );
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document.write( "t= 1 / .417 = 2.4 hrs<BR>\n" );
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document.write( "check<BR>\n" );
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document.write( "2.4 * 1/4 + 2.4 * 1/6 = .6+.4 =1,,,,,, ok<BR>\n" );
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