document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=371015>Question 371015</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane travels against a 52.5 mph wind in 5 hours and it makes the return trip with the same wind in 2 hours.  Find the speed of the plane in still air.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264336 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=264336\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airplane travels against a 52.5 mph wind in 5 hours and it makes the return trip with the same wind in 2 hours.  Find the speed of the plane in still air.<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let plane speed in still air be x mph<BR>\n" );
document.write( "wind speed = 52.5 mph<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Against wind speed = x-52.5<BR>\n" );
document.write( "with wind speed = x+52.5<BR>\n" );
document.write( "..<BR>\n" );
document.write( "distance is the same<BR>\n" );
document.write( "against wind time = 5 hours<BR>\n" );
document.write( "with wind time = 2 hours<BR>\n" );
document.write( "..<BR>\n" );
document.write( "5(x-52.5) = 2(x+52.5)<BR>\n" );
document.write( "5x-262.5=2x+105<BR>\n" );
document.write( "5x-2x=262.5+105<BR>\n" );
document.write( "3x= 367.5<BR>\n" );
document.write( "/3<BR>\n" );
document.write( "x=122.5 mph the speed of plane<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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