document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=788288>Question 788288</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if a plane that averages 300 miles per hour has 5 hours worth or fuel and encounters a tail wind of 30 miles per hour, how far can the plane safely fly and return </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #478478 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=478478\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if a plane that averages 300 miles per hour has 5 hours worth or fuel and encounters a tail wind of 30 miles per hour, how far can the plane safely fly and return<BR>\n" );
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document.write( "If you mean its airspeed is 300, and it's flying outbound with a tailwind, its outbound groundspeed = 300 + 30, and inbound is 300 - 30 mi/hr<BR>\n" );
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document.write( "Its average speed for the roundtrip (regardless of distance) is<BR>\n" );
document.write( "2*330*270/(330+270) = 297 mi/hr<BR>\n" );
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document.write( "RT distance = 297*5 = 1485 miles<BR>\n" );
document.write( "--> 742.5 miles each way<BR>\n" );
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