document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=993954>Question 993954</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Christie pilots her plane for 300 mi against a headwind in 2 hrs. The flight would take 1 hr and 30 mins with a tailwind of the same speed. Find the Headwind and the speed of the plane in still air.\r<BR>\n" );
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document.write( "The speed of the headwind on the plane is ___mph and the speed of the plane in still air is ___mph. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613128 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane's speed in calm air=x<BR>\n" );
document.write( "wind speed=w<BR>\n" );
document.write( "x-w=150 ;; 300 miles in 2 hours is 150 mph<BR>\n" );
document.write( "For x+w, we know that 300 miles is done in 3/2 hours.  That is 200 mph.<BR>\n" );
document.write( "Therefore<BR>\n" );
document.write( "x-w=150<BR>\n" );
document.write( "x+w=200<BR>\n" );
document.write( "2x=350<BR>\n" );
document.write( "x=175 mph, speed of plane in still air.<BR>\n" );
document.write( "wind speed is 25 mph (headwind/tailwind) </SPAN>\n" );
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