document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1169512>Question 1169512</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A tank containing 50 litres of water develops a leak and loses water at a constant rate. After 20 minute it contains 40 litres. After a further 30 minutes the tank is 5% of its full capacity. Determine the tank's capacity.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #794284 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=794284\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> at 0 minutes, the tank contains 50 liters.<BR>\n" );
document.write( "at 20 minutes, the tank contains 40 liters.<BR>\n" );
document.write( "at 50 minutes, the tank is 5% full.\r<BR>\n" );
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document.write( "if the tank is losing water at a constant rate, then it is losing the same amount of water each minute.\r<BR>\n" );
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document.write( "since it went from 50 liters to 40 liters in 20 minutes, it was losing 10 liters in 20 minutes.\r<BR>\n" );
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document.write( "losing 10 liters in 20 minutes at a constant rate means it is losing .5 liters per minute because 10 liters / 20 minutes = .5 liters per minute.\r<BR>\n" );
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document.write( "in another 30 minutes, at the constant rate of .5 liters per minute, it would lose an additional 15 liters.\r<BR>\n" );
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document.write( "the level would then be at 40 - 15 = 25 liters.\r<BR>\n" );
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document.write( "25 liters is 5% of the capacity of the tank, so the tank's capacity would have to be 25/.05 = 500 liters.\r<BR>\n" );
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