document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=994642>Question 994642</A>: <I><SPAN STYLE=\"word-break: break-all;\"> sally can paint a room in 5 hours while it takes Steve 7 hours to paint the same room. How long would it take them to paint the room if they worked together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613658 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613658\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sally can paint a room in 5 hours while it takes Steve 7 hours to paint the same room. How long would it take them to paint the room if they worked together?<BR>\n" );
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document.write( "Sally does 1/5 of a room per hour.<BR>\n" );
document.write( "Steve does 1/7 of a room per hour.<BR>\n" );
document.write( "Together --> 1/5 + 1/7 = 12/35 rooms per hour.<BR>\n" );
document.write( "The inverse is hours per room = 35/12<BR>\n" );
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document.write( "Parallel work is similar to parallel flow and parallel resistors.<BR>\n" );
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document.write( "PS  5*7/(5+7) = 35/12\r<BR>\n" );
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