document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=237638>Question 237638</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A pool can be filled in 12 hours using a pipe alone, or in 28 hours using a hose alone.  if water is entering through both the pipe and the hose.  How long will it take to fill the pool? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #174752 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=174752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A pool can be filled in 12 hours using a pipe alone, or in 28 hours using a hose alone. if water is entering through both the pipe and the hose. How long will it take to fill the pool?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = time it takes to fill the pool with both pipes<BR>\n" );
document.write( "then<BR>\n" );
document.write( "x(1/12 + 1/28) = 1<BR>\n" );
document.write( "x(28 + 12) = 336<BR>\n" );
document.write( "x(40) = 336<BR>\n" );
document.write( "x = 8.4 hours<BR>\n" );
document.write( "Or, in hours and minutes<BR>\n" );
document.write( "x = 8 hours and (.4 * 60) minutes<BR>\n" );
document.write( "x = 8 hours and 24 minutes\r<BR>\n" );
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