document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935746>Question 935746</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A pond has two inlet pipes to fill a pond up.One pipe can fill the pond in 10 hours.The second pipe in 12 hours If the first pipe is open for 5 hours and then the second pipe is open ,how long will it take both pipes working together to fill the pond? This is what I did.... t/10 + t/12 =1/2...my question is did I set this equation up right....tks tutors. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569034 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=569034\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ---<BR>\n" );
document.write( "fraction of pond filled by first pipe in 5 hours:<BR>\n" );
document.write( "r = w/t<BR>\n" );
document.write( "r = 1/10<BR>\n" );
document.write( "w = rt<BR>\n" );
document.write( "w = (1/10)*5<BR>\n" );
document.write( "w = 1/2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "fraction of pond remaining to be filled by both pipes = 1/2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "both pipes working together to fill 100% of the pond:<BR>\n" );
document.write( "r = w/t<BR>\n" );
document.write( "rates are additive:<BR>\n" );
document.write( "r = 1/10 + 1/12<BR>\n" );
document.write( "t = w/r<BR>\n" );
document.write( "t = 1/(1/10 + 1/12)<BR>\n" );
document.write( "t = 5.45454545455 hours<BR>\n" );
document.write( "---<BR>\n" );
document.write( "both pipes working together to fill 1/2 of the pond:<BR>\n" );
document.write( "t/2 = 5.45454545455/2<BR>\n" );
document.write( "t/2 = 2.72727272727<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "how long will it take both pipes working together to fill the pond = 2.72 hours<BR>\n" );
document.write( "---<BR>\n" );
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document.write( "--- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );