document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=715525>Question 715525</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pablo can paint a room in 2 hours, and his daughter Brenna can paint one in 8 hours. How long will it take them together to paint a room?<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 #439481 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=439481\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let P = time Pablo can paint one room<BR>\n" );
document.write( "Let B = time Brenna can paint one room<BR>\n" );
document.write( "Let T = time for both to paint one room<BR>\n" );
document.write( "Use this simple formula<BR>\n" );
document.write( "(1) T = (P*B)/(P + B)<BR>\n" );
document.write( "Using given times we get<BR>\n" );
document.write( "(2) T = (2*8)/(2 + 8) or<BR>\n" );
document.write( "(3) T = 16/10 or<BR>\n" );
document.write( "(4) T = 1.6<BR>\n" );
document.write( "Answer: When they paint together they will take 1.6 hr. to paint one room.<BR>\n" );
document.write( "Comment: The formula given by (1) can only be used for two people. If more than two the formula is the inverse of the sum of the inverses. </SPAN>\n" );
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