document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=722483>Question 722483</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A small airplane takes the same amount of time to fly 600 miles against the jet stream as it does to fly 1000 miles with the jet stream. If the speed of the airplane in still air is 180 mph, how fast is the airstream </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #442748 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=442748\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> plane speed	=	180	mph										<BR>\n" );
document.write( "windspeed	=	x	mph										<BR>\n" );
document.write( "													<BR>\n" );
document.write( "speed against	wind	180	-	x									<BR>\n" );
document.write( "speed with	wind	180	+	x									<BR>\n" );
document.write( "													<BR>\n" );
document.write( "Distance against	wind	600	miles										<BR>\n" );
document.write( "Distance with	wind	1000	miles										<BR>\n" );
document.write( "													<BR>\n" );
document.write( "t=d/r	time against = time with		wind	-									<BR>\n" );
document.write( "600	/	(	180	-	x	)=	1000	/	(	180	+	x	)<BR>\n" );
document.write( "600	(	180	+	x 	)=	1000	(	180	-x	)			<BR>\n" );
document.write( "108000	+	600	x	=	180000	-	-1000	x					<BR>\n" );
document.write( "1000	x	600	x		180000	+	-108000						<BR>\n" );
document.write( "1600	x	=	72000										<BR>\n" );
document.write( "/	1600												<BR>\n" );
document.write( "x	=	45	mph	wind	speed								<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );