document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23078>Question 23078</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two Trains leave Chicago, one traveling east at 30 miles per hour and one traveling west at 40 miles per hour. When will the trains be 280 miles apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #11511 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon%21><B>stanbon!(97)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon%21><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=11511\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Draw the picture.<BR>\n" );
document.write( "East train data:  distance = x; rate=30; time = x/30<BR>\n" );
document.write( "West train data:  distance = 280-x; rate = 40; time = (280-x)/40<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "Time East = Time West<BR>\n" );
document.write( "x/30 = (280-x)/40<BR>\n" );
document.write( "40x = 30(280-x)<BR>\n" );
document.write( "40x = 30(280)-30x<BR>\n" );
document.write( "70x =30(280<BR>\n" );
document.write( "  x = 3(40)<BR>\n" );
document.write( "  x = 120 mph<BR>\n" );
document.write( "Therefore time = x/30 = 120/30= 4 hours\r<BR>\n" );
document.write( "\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );