document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=869686>Question 869686</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A helicopter spraying fertilizer over a field can fly 0.4 mile downwind in the same time as it can fly 0.3 mile upwind. Find the speed of the wind if the helicopter travels 35 mph in still air when dusting crops.\r<BR>\n" );
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document.write( "____________mph </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524447 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=524447\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Helicopter speed	=	35	mph										<BR>\n" );
document.write( "wind speed given	=	x	mph										<BR>\n" );
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document.write( "speed against	wind	35	-	x									<BR>\n" );
document.write( "speed with	wind	35	+	x									<BR>\n" );
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document.write( "Distance against	wind	0.3	miles										<BR>\n" );
document.write( "Distance with	wind	0.4	miles										<BR>\n" );
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document.write( "t=d/r	time against = time with		wind	-									<BR>\n" );
document.write( "0.3	/	(	35	-	x	)=	0.4	/	(	35	+	x	)<BR>\n" );
document.write( "0.3	(	35	+	x 	)=	0.4	(	35	-x	)			<BR>\n" );
document.write( "10.5	+	0.3	x	=	14	-	-0.4	x					<BR>\n" );
document.write( "0.4	x	0.3	x		14	+	-10.5						<BR>\n" );
document.write( "0.7	x	=	3.5										<BR>\n" );
document.write( "/	0.7												<BR>\n" );
document.write( "x	=	5	mph	wind	speed								<BR>\n" );
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