document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=735210>Question 735210</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How far from an airport can an airplane fly and return in 8 hours, if its outgoing speed is 160 kilometers per hour and its returning speed is 240 kilometers per hour? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #852706 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13334)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=852706\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Here is a very different solution method than the one shown by the other tutor.<br><BR>\n" );
document.write( "The ratio of the two speeds is 160:240 = 2:3; since the distances out and back are the same, the ratio of the times at the two speeds is 3:2.  That means 3/5 of the time is at the lower speed and 2/5 is at the higher speed.<br><BR>\n" );
document.write( "The total time is 8 hours; 3/5 of that total time is 24/5 hours, or 4 4/5 hours.<br><BR>\n" );
document.write( "Flying at 160 km/h for 4 4/5 hours, the plane can fly (160)(24/5) = 32*24 = 768 km.<br><BR>\n" );
document.write( "To check that answer, we can find that the distance the plane flies at 240 km/h for 16/5 hours is (240)(16/5) = 48*16 = 768 km.<br><BR>\n" );
document.write( "ANSWER: 768 km<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );