document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1203819>Question 1203819</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A runner is jogging in a straight line at a steady v, 3 km/hr. When the runner is L= 5.9 km from the finish line, a bird begins flying straight from the runner to the finish line at v= 12 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies directly back to the runner.\r<BR>\n" );
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document.write( "What cumulative distance does the bird travel? Even though the bird is a dodo, as- sume that it occupies only one point in space (a \"zero\" length bird), travels in a straight line, and that it can turn without loss of speed.\r<BR>\n" );
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document.write( "Answer in units of km. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #839659 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52786)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=839659\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A runner is jogging in a straight line at a steady v, 3 km/hr. When the runner is L= 5.9 km <BR>\n" );
document.write( "from the finish line, a bird begins flying straight from the runner to the finish line at <BR>\n" );
document.write( "v= 12 km/hr (4 times as fast as the runner). When the bird reaches the finish line, <BR>\n" );
document.write( "it turns around and flies directly back to the runner.<BR>\n" );
document.write( "What cumulative distance does the bird travel? Even though the bird is a dodo, <BR>\n" );
document.write( "as- sume that it occupies only one point in space (a \"zero\" length bird), <BR>\n" );
document.write( "travels in a straight line, and that it can turn without loss of speed.<BR>\n" );
document.write( "Answer in units of km.<BR>\n" );
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document.write( "The bird is flying the same time as a runner is running, but has the speed,\r\n" );
document.write( "which is 4 times as great as the runner has.\r\n" );
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document.write( "Therefore, while the runner is running, the bird will cover the distance, which is \r\n" );
document.write( "4 times as long, as the distance covered by the runner, i.e.  4 x 5.9 km  = 23.6 kilometers.\r\n" );
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document.write( "<U>ANSWER</U>.  The cumulative distance the bird will travel is 23.6 kilometers.\r\n" );
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document.write( "Solved.\r<BR>\n" );
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document.write( "It is well known entertainment problem.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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