document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1052086>Question 1052086</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two planes just toke off a mountain. The first plane is travelling 1.5 times as fast as the second one. After travelling in the same direction for eight hours they are for 420 miles apart. What is the average speed of Each plane </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #667502 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=667502\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rt = d (rate*time = distance)<BR>\n" );
document.write( "r = d/t<BR>\n" );
document.write( "8x(1.5) = 8x+420<BR>\n" );
document.write( "12x = 8x+420<BR>\n" );
document.write( "4x = 420<BR>\n" );
document.write( "x = 105 was the speed of the slow plane, and<BR>\n" );
document.write( "105*1.5 = 157.5 was the speed of the fast plane<BR>\n" );
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document.write( "Check - In 8 hours:<BR>\n" );
document.write( "157.5*8 = 1260  <BR>\n" );
document.write( "105*8 .  = 840<BR>\n" );
document.write( "Difference:420 Correct<BR>\n" );
document.write( ":<BR>\n" );
document.write( "John<BR>\n" );
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