document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=574570>Question 574570</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An express and local train leave GraysLake 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 the local. Find the speed of each train. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #369176 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=369176\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. <BR>\n" );
document.write( "The express travels twice as fast as the local and arrives 1 hour ahead of the local.<BR>\n" );
document.write( " Find the speed of each train.<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let s = speed of the local<BR>\n" );
document.write( "then<BR>\n" );
document.write( "2s = speed of the express<BR>\n" );
document.write( ": <BR>\n" );
document.write( "write a time equation: time = dist/speed<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Local time - Express time = 1 hr<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2Fs ALIGN=MIDDLE  ALT=\"50%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2F%282s%29 ALIGN=MIDDLE  ALT=\"50%2F%282s%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 1<BR>\n" );
document.write( "Multiply by 2s<BR>\n" );
document.write( "2s*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2Fs ALIGN=MIDDLE  ALT=\"50%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > - 2s*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2F%282s%29 ALIGN=MIDDLE  ALT=\"50%2F%282s%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2s(1)<BR>\n" );
document.write( "cancel the denominators<BR>\n" );
document.write( "2(50) - 50 = 2s<BR>\n" );
document.write( "100 - 50 = 2s<BR>\n" );
document.write( "50 = 2s; 50 mph is the speed of express<BR>\n" );
document.write( "and<BR>\n" );
document.write( "s = 50/2 = 25 mph is the speed of the local<BR>\n" );
document.write( ";<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this by finding the time of each<BR>\n" );
document.write( "Local: 50/25 = 2 hrs<BR>\n" );
document.write( "Expre: 50/50 = 1 hr<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "difference = 1 hr </SPAN>\n" );
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