document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=217348>Question 217348</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane, traveling with a tail wind, travels 1000 miles in 2 hours.  The return trip, against the wind, takes 2.5 hours.  Find the speed of the wind(assume that both rates are constant) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163919 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=163919\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airplane, traveling with a tail wind, travels 1000 miles in 2 hours. The return trip, against the wind, takes 2.5 hours. Find the speed of the wind(assume that both rates are constant)<BR>\n" );
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document.write( "w = wind speed<BR>\n" );
document.write( "r = plane's airspeed<BR>\n" );
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document.write( "1000 = 2(r+w)<BR>\n" );
document.write( "1000 = 2.5(r-w)<BR>\n" );
document.write( "r + w = 500<BR>\n" );
document.write( "r - w = 400<BR>\n" );
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document.write( "2r = 900<BR>\n" );
document.write( "r = 450 mph<BR>\n" );
document.write( "w = 50 mph<BR>\n" );
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