document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=153325>Question 153325</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An express and local train leave Gray’s Lake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local, and arrives 1 hour ahead of it. Find the speed of each train. \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #112864 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=112864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An express and local train leave Gray’s Lake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local, and arrives 1 hour ahead of it. Find the speed of each train. \r<BR>\n" );
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document.write( "Local train DATA:<BR>\n" );
document.write( "rate = x mph ; distance = 50 miles ; time = 50/x hrs<BR>\n" );
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document.write( "Express train DATA:<BR>\n" );
document.write( "rate = 2x mph ; distance = 50 miles ; time = 50/2x hrs<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "local train time - express train time = 1 hr<BR>\n" );
document.write( "50/x - 50/2x = 1<BR>\n" );
document.write( "Multiply thru by 2x to get:<BR>\n" );
document.write( "100 - 50 = 2x<BR>\n" );
document.write( "2x = 50<BR>\n" );
document.write( "x = 25 mph (local train speed)<BR>\n" );
document.write( "2x = 50 mph (express train speed)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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