document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=815336>Question 815336</A>: <I><SPAN STYLE=\"word-break: break-all;\"> It is 2800 miles from new York to London.it takes 7 hours to get to London with the wind and 9 hours on a return trip against the wind.  What is the rate of the wind  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #490962 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=490962\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> s = d / t<BR>\n" );
document.write( "t = d / s<BR>\n" );
document.write( "---<BR>\n" );
document.write( "2800/(a + w) = 7<BR>\n" );
document.write( "2800 = 7(a + w)<BR>\n" );
document.write( "2800 = 7a + 7w<BR>\n" );
document.write( "7a = 2800 - 7w<BR>\n" );
document.write( "a = 400 - w<BR>\n" );
document.write( "---<BR>\n" );
document.write( "2800/(a - w) = 9<BR>\n" );
document.write( "2800 = 9(a - w)<BR>\n" );
document.write( "2800 = 9a - 9w<BR>\n" );
document.write( "---<BR>\n" );
document.write( "2800 = 9a - 9w<BR>\n" );
document.write( "2800 = 9(400 - w) - 9w<BR>\n" );
document.write( "2800 = 3600 - 9w - 9w<BR>\n" );
document.write( "18w = 800<BR>\n" );
document.write( "---<BR>\n" );
document.write( "wind speed = 44.444444 mph<BR>\n" );
document.write( "airplane speed = 355.555555 mph<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Convert fractions, decimals, and percents:<BR>\n" );
document.write( "https://sooeet.com/math/fraction-decimal-percent.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Calculate and graph the linear regression of any data set:<BR>\n" );
document.write( "https://sooeet.com/math/linear-regression.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );