document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1042485>Question 1042485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using either the substitution or elimination method solve this problem. 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?\r<BR>\n" );
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document.write( "can you please explain each step so I can understand where everything comes from? Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #657460 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=657460\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> speed of plane=P<BR>\n" );
document.write( "speed of wind=W<BR>\n" );
document.write( "To fly 1330 miles in 5 hours means 1330/5=266 mph<BR>\n" );
document.write( "to fly 1330 miles in 7 hours means 1330/7=190 mph<BR>\n" );
document.write( "The wind is added or subtracted to the plane's speed.<BR>\n" );
document.write( "P+W=266; here the wind speed is added to the plane's speed.<BR>\n" );
document.write( "P-W=190; subtracted.<BR>\n" );
document.write( "Add the two, and the W will disappear<BR>\n" );
document.write( "2P=456<BR>\n" );
document.write( "divide by 2 both sides<BR>\n" );
document.write( "P=228 mph.<BR>\n" );
document.write( "P+W=266<BR>\n" );
document.write( "W=266-228=38 mph. ANSWER<BR>\n" );
document.write( "P-W=228=38=190 mph, the speed of the plane against the wind. </SPAN>\n" );
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