document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=328338>Question 328338</A>: <I><SPAN STYLE=\"word-break: break-all;\"> two planes leave newark airport at the same time.  The rate of speed of the northbound plane is 100 mils per hour.,than that of the southbound plane.  at the end of 5 hours, the planes are 2000 miles apart.  Find the rate of each? </SPAN>\n" );
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document.write( "let speed of south bound plane be x<BR>\n" );
document.write( "north bound plane = x+100  (  presume it is 100 more)<BR>\n" );
document.write( "Time thay travel = 5 hours<BR>\n" );
document.write( "distance of south boundplane = 5x<BR>\n" );
document.write( "distance of north boundplane = 5(x+100)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "5x+5(x+100)=2000<BR>\n" );
document.write( "5x+5x+500=2000<BR>\n" );
document.write( "10x+500=2000<BR>\n" );
document.write( "10x=2000-500<BR>\n" );
document.write( "10x= 1500<BR>\n" );
document.write( "x= 150 mph south bound plane<BR>\n" );
document.write( "..<BR>\n" );
document.write( "north bound plane  speed = x+100 = 150+100=250 mph\r<BR>\n" );
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document.write( "--------------<BR>\n" );
document.write( "CHECK<BR>\n" );
document.write( "150*5+250*5= 2000 </SPAN>\n" );
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