document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=430862>Question 430862</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes leave an airport. One flying north at 480 mph and the other flying south at 520 mph. How long will it take for the planes to be 3000 miles apart? I know that I have to use the distance formula I just don't know how to set up the problem please help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #299137 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=299137\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> North bound 480 mph<BR>\n" );
document.write( "south bound 520 mph<BR>\n" );
document.write( "..<BR>\n" );
document.write( "opposite directions<BR>\n" );
document.write( "so add up speed<BR>\n" );
document.write( " 520+480=1000 mph<BR>\n" );
document.write( "distance = 3000 miles<BR>\n" );
document.write( "t= d/r<BR>\n" );
document.write( "t=3000/1000<BR>\n" );
document.write( "t = 3 hours </SPAN>\n" );
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