document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=328411>Question 328411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane took 2.5 hours to fly 625 miles with the wind.  It took 4 hours and 10 minutes to make the return trip against the same wind.  Find the wind speed and the speed of the plane in still air.  (Show all work)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #235240 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=235240\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airplane took 2.5 hours to fly 625 miles with the wind. It took 4 hours and 10 minutes to make the return trip against the same wind. Find the wind speed and the speed of the plane in still air.<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "625 miles/2.5 hrs = 250 mph<BR>\n" );
document.write( "625 miles/(4 1/6) hrs = 625/(25/6) = 150 mph<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "The \"speed in still air\" is the airspeed, and is the average<BR>\n" );
document.write( "= (250+150)/2 = 200 mph<BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "The windspeed is the difference: 250 - 200 = 50 mph\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );