document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=554834>Question 554834</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if person A can paint a house in 4 hours, and person B can paint the same house in 7 hours... how much time would it take for A and B to paint the same house 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 #361494 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=361494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Add their rates of painting to get their <BR>\n" );
document.write( "rate working together<BR>\n" );
document.write( "A's rate: ( 1 house ) / ( 4 hours )<BR>\n" );
document.write( "B's rate: ( 1 house ) / ( 7 hours )<BR>\n" );
document.write( "Let their time working together = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F4+%2B+1%2F7+=+1%2Ft+ ALIGN=MIDDLE  ALT=\"+1%2F4+%2B+1%2F7+=+1%2Ft+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+28t+ ALIGN=MIDDLE  ALT=\"+28t+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+7t+%2B+4t+=+28+ ALIGN=MIDDLE  ALT=\"+7t+%2B+4t+=+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+11t+=+28+ ALIGN=MIDDLE  ALT=\"+11t+=+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+2.545+ ALIGN=MIDDLE  ALT=\"+t+=+2.545+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.5454%2A60+=+32.73+ ALIGN=MIDDLE  ALT=\"+.5454%2A60+=+32.73+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Working together, they paint the house in 2 hrs and 33 min </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );