document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=667747>Question 667747</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes start from Chicago at the same time and fly in opposite directions, one averaging a speed of 40 miles per hour greater than the other. If they are 2000 miles apart after 5 hours, find their average speeds. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #415155 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=415155\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plane A speed = x<BR>\n" );
document.write( "Plane B speed = x+40\r<BR>\n" );
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document.write( "They are moving away from each other<BR>\n" );
document.write( "combined speed = 2x+40\r<BR>\n" );
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document.write( "Distance = 2000<BR>\n" );
document.write( "time = 5\r<BR>\n" );
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document.write( "d= rt<BR>\n" );
document.write( "2000= (2x+40)*5<BR>\n" );
document.write( "2000=10x+200<BR>\n" );
document.write( "1800=10x<BR>\n" );
document.write( "x= 180 mi/h\r<BR>\n" );
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document.write( "180mi/h and 220 mi/h are their speeds<BR>\n" );
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