document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=376251>Question 376251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One pipe takes 30 minutes to fill a tank. After it has been running for 10 minutes, it is shut off. A second pipe is then opened and it finishes the tank in 15 minutes. How long would it take the second pipe alont to fill the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #267653 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=267653\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One pipe takes 30 minutes to fill a tank. After it has been running for 10 minutes, it is shut off. A second pipe is then opened and it finishes the tank in 15 minutes. How long would it take the second pipe alont to fill the tank?<BR>\n" );
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document.write( "Let x = time (mins) it takes second pipe to fill the tank alone<BR>\n" );
document.write( "then<BR>\n" );
document.write( "10(1/30) + 15(1/x) = 1<BR>\n" );
document.write( "multiplying both sides by 30x:<BR>\n" );
document.write( "10(x) + 15(30) = 30x<BR>\n" );
document.write( "10x + 450 = 30x<BR>\n" );
document.write( "450 = 20x<BR>\n" );
document.write( "22.5 mins = x\r<BR>\n" );
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