document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=415262>Question 415262</A>: <I><SPAN STYLE=\"word-break: break-all;\"> an airplane flies 4110 miles with the wind and 330 against the wind in the same lenght of tome if the speed of the wind is 20 mph what is the speed of the airplane still on air? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #291177 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=291177\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "let assume the speed of the airplane = x mph\r<BR>\n" );
document.write( "\n" );
document.write( "4110/(x+20)  = 330 /(x-20)\r<BR>\n" );
document.write( "\n" );
document.write( "=> 137/(x+20) = 11/(x-20) .....  after dividing by 30 \r<BR>\n" );
document.write( "\n" );
document.write( "=> 137x - 137*20 = 11x + 11*20\r<BR>\n" );
document.write( "\n" );
document.write( "=> 126x = 148* 20 \r<BR>\n" );
document.write( "\n" );
document.write( "=> x = 148*20 / 126\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " x = 23.49 mph\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );