document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=936514>Question 936514</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sidney flew in an airplane 5 times during her vacation. The flights averaged 2 hours 28 minutes long. The lengths of her first four flights were 2 hours 10 minutes, 3 hours 20 minutes, 1 hour 15 minutes, and 2 hours 40 minutes. What was the length of her last flight? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569999 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=569999\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = length of 5th flight in hours<BR>\n" );
document.write( "y = sum of lengths of first 4 flights in hours<BR>\n" );
document.write( "---<BR>\n" );
document.write( "y = (2+10/60) + (3+20/60) + (1+15/60) + (2+40/60)<BR>\n" );
document.write( "y = 9.4166666666<BR>\n" );
document.write( "---<BR>\n" );
document.write( "( y + x )/5 = (2+28/60)<BR>\n" );
document.write( "( y + x )/5 = 2.4666666666<BR>\n" );
document.write( "x = 2.4666666666*5 - y<BR>\n" );
document.write( "x = 2.4666666666*5 - 9.4166666666<BR>\n" );
document.write( "x = 2.916666666<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "the 5th flight lasted 2.917 hours<BR>\n" );
document.write( "---<BR>\n" );
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document.write( "--- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );