document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147411>Question 147411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane flew for 6 hours with a tail of 60 km/hr. The return flight against the same wind took 8 hours.  Find the speed of the airplane in still air. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107797 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=107797\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airplane flew for 6 hours with a tail of 60 km/hr. The return flight against the same wind took 8 hours.  Find the speed of the airplane in still air.<BR>\n" );
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document.write( "With the wind DATA:<BR>\n" );
document.write( "Time = 6 hrs ; rate = p+60 mph ; distance = tr = 6(p+60) = 6p+360 miles<BR>\n" );
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document.write( "Against the wind DATA:<BR>\n" );
document.write( "Time = 8hrs ; rate = p-60 mph ; distance = tr = 8(p-60) = 8p-480 miles<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "distance with = distance against<BR>\n" );
document.write( "6p+360 = 8p-480<BR>\n" );
document.write( "2p = 840<BR>\n" );
document.write( "p = 480 mph (speed of the plane in still air)<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );