document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=595789>Question 595789</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a twin-engine airplane has to travel 896 miles from city a to city b. It takes 4 hours to get there with the wind. against the wind it takes 7 hours. 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 #377298 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=377298\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a twin-engine airplane has to travel 896 miles from city a to city b. It takes 4 hours to get there with the wind. against the wind it takes 7 hours. what is the rate of the wind<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=speed of airplane with no wind<BR>\n" );
document.write( "let c=speed of wind<BR>\n" );
document.write( "x+c=net speed of plane downwind<BR>\n" );
document.write( "x-c=net speed of plane upwind<BR>\n" );
document.write( "..<BR>\n" );
document.write( "travel time =distance/speed<BR>\n" );
document.write( "896/(x-c)=7<BR>\n" );
document.write( "896/x+c)=4<BR>\n" );
document.write( "..<BR>\n" );
document.write( "7x-7c=896<BR>\n" );
document.write( "4x+4c=896<BR>\n" );
document.write( "..<BR>\n" );
document.write( "28x-28c=3584<BR>\n" );
document.write( "28x+28c=6272<BR>\n" );
document.write( "subtract<BR>\n" );
document.write( "56c=2688<BR>\n" );
document.write( "c=48 mph<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );