document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=961196>Question 961196</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A cold water pipe can fill a swimming pool in 10 hours, and a hot water pipe can fill the pool in 15 hours. How long will it take to fill the pool if both pipes are left open? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #587402 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=587402\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A cold water pipe can fill a swimming pool in 10 hours, and a hot water pipe can fill the pool in 15 hours. How long will it take to fill the pool if both pipes are left open?<BR>\n" );
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document.write( "cold water rate:: 1/10 job/hr<BR>\n" );
document.write( "hot water rate:: 1/15 job/hr<BR>\n" );
document.write( "together rate:: 1/x job/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate + rate = together rate<BR>\n" );
document.write( "1/10 + 1/15 = 1/x<BR>\n" );
document.write( "15x + 10x = 150<BR>\n" );
document.write( "25x = 150<BR>\n" );
document.write( "x = 6 (# of hours to do the job together)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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