document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388516>Question 388516</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a plane can travel  1260 miles in 2 hours. the return trip takes a half an hour longer. find the wind speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #274841 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=274841\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a plane can travel 1260 miles in 2 hours. <BR>\n" );
document.write( "the return trip takes a half an hour longer. <BR>\n" );
document.write( "find the wind speed.<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "With-wind DATA:<BR>\n" );
document.write( "distance = 1260 miles ; time = 2 hrs ; Rate = 1260/2 = 630 mph<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Against-wind DATA:<BR>\n" );
document.write( "distance = 1260 miles ; time =  5/2 hrs ; Rate=1260/(5/2) = 504 mph<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equations:<BR>\n" );
document.write( "P + w = 630<BR>\n" );
document.write( "P - w = 504<BR>\n" );
document.write( "----<BR>\n" );
document.write( "2p = 1134<BR>\n" );
document.write( "p = 567 (speed of the plane in still air)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Since p+w = 630, w = 630-567 = 63 mph (speed of the wind)<BR>\n" );
document.write( "==============================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );