document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=183571>Question 183571</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A certain aircraft can fly 1330 miles with the wind in 5 hours and travel the same distance against the wind in 7 hours. What is the speed 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 #137792 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=137792\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A certain aircraft can fly 1330 miles with the wind in 5 hours and travel the same distance against the wind in 7 hours. What is the speed of the wind?<BR>\n" );
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document.write( "Downwind DATA:<BR>\n" );
document.write( "distance = 1330 ; time = 5 hrs ; rate = d/t = 1330/5 = 266 mph<BR>\n" );
document.write( "---------------------------<BR>\n" );
document.write( "Upwind DATA:<BR>\n" );
document.write( "distance = 1330 ; time = 7 hrs ; rate = d/t = 1330/7 = 190 mph<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "p + w = 266<BR>\n" );
document.write( "P - w = 190<BR>\n" );
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document.write( "Subtract 2nd equ. from 1st to get:<BR>\n" );
document.write( "2w = 76<BR>\n" );
document.write( "w = 38 mph (speed of the wind)<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );