document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=456108>Question 456108</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an airplane flew for 4 hours against a head wind of 40km/h.on the return flight the same wind was now a tail wind,and the flight took 3 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 #313100 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=313100\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4(x-40)=3(x+40)<BR>\n" );
document.write( "4x-160=3x+120<BR>\n" );
document.write( "x=280<BR>\n" );
document.write( "The speed of the plane in still air is 280 mph.. </SPAN>\n" );
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