document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=384344>Question 384344</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a plane can travel 480 miles per hour with the wind and 400 miles per hour against the wind, find the speed of the plane 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 #272072 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=272072\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a plane can travel 480 miles per hour with the wind and 400 miles per hour against the wind, find the speed of the plane in still air?<BR>\n" );
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document.write( "Let \"p\" be speed of plane in still air.<BR>\n" );
document.write( "Let \"c\" be speed of the wind.<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "p + c = 480 mph<BR>\n" );
document.write( "p - c = 400 mph<BR>\n" );
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document.write( "Add and solve for \"p\":<BR>\n" );
document.write( "2P = 880<BR>\n" );
document.write( "p = 440 mph (speed of the plane in still air)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );