document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=370897>Question 370897</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airliner leaves Phoenix traveling at an average rate of 420 mph. Thirty minutes later, a second airliner leaves Phoenix traveling along a parallel route. If the second plane overtakes the first at a point 1680 miles from Phoenix, find its rate. I need help creating an equation to my word problem as well as getting the solution. Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264365 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=264365\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airliner leaves Phoenix traveling at an average rate of 420 mph.<BR>\n" );
document.write( " Thirty minutes later, a second airliner leaves Phoenix traveling along a parallel route.<BR>\n" );
document.write( " If the second plane overtakes the first at a point 1680 miles from Phoenix, find its rate.<BR>\n" );
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document.write( "Convert 30 min to .5 hrs<BR>\n" );
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document.write( "Let r = speed of the 2nd plane<BR>\n" );
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document.write( "Write a time equation, time = dist/speed<BR>\n" );
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document.write( "1st plane time = 2nd plane time + .5 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1680%2F420 ALIGN=MIDDLE  ALT=\"1680%2F420\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1680%2Fr ALIGN=MIDDLE  ALT=\"1680%2Fr\"   DISABLED_style= \"max-width:90%; height:auto;\" > + .5<BR>\n" );
document.write( " 4 - .5 = 1680/r<BR>\n" );
document.write( "3.5r = 1680<BR>\n" );
document.write( "r = 1680/3.5<BR>\n" );
document.write( "r = 480 mph <BR>\n" );
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document.write( "You can check this solution by finding the actual travel time of each </SPAN>\n" );
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