document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620330>Question 620330</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 180 mph in calm air.  Flying with the wind, the plane can fly 600 mi in the same ammount of time it takes to fly 480 mi against the wind. Find 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 #390095 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=390095\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 180 mph in calm air. Flying with the wind, the plane can fly 600 mi in the same ammount of time it takes to fly 480 mi against the wind. Find the rate of the wind.<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let c=rate of wind<BR>\n" );
document.write( "180+c=speed of plane with wind<BR>\n" );
document.write( "180-c=speed of plane against wind<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "..<BR>\n" );
document.write( "600/(180+c)=480/(180-c)<BR>\n" );
document.write( "600(180)-600c=480(180)+480c<BR>\n" );
document.write( "600(180)-480(180)=600c+480c<BR>\n" );
document.write( "180(600-480)=1080c<BR>\n" );
document.write( "21600=1080c<BR>\n" );
document.write( "c=20 mph<BR>\n" );
document.write( "rate of wind=20 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );