document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=149089>Question 149089</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I put this word problem into a quadratic equation or set it up?\r<BR>\n" );
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document.write( "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. <BR>\n" );
document.write( "I know that distance equals rate times time but on all else I am confused to say the least. Any info you can offer will be greatly appreciated.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109358 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=109358\">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.<BR>\n" );
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document.write( "The time they left is irrelevant to the problem<BR>\n" );
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document.write( "Let s = speed of the local<BR>\n" );
document.write( "then<BR>\n" );
document.write( "2s = speed of the express<BR>\n" );
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document.write( "Write a time equation: Time = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dist%2Fspeed ALIGN=MIDDLE  ALT=\"dist%2Fspeed\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Express time + 1 hr = Local time<BR>\n" );
document.write( "<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 = <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;\" ><BR>\n" );
document.write( "Get rid of the denominators, mult equation by 2s; results:<BR>\n" );
document.write( "50 + 2s = 2(50)<BR>\n" );
document.write( "2s = 100 - 50<BR>\n" );
document.write( "2s = 50<BR>\n" );
document.write( "s = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2F2 ALIGN=MIDDLE  ALT=\"50%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "s = 25 mph speed of the local<BR>\n" );
document.write( "then<BR>\n" );
document.write( "50 mph speed of the express<BR>\n" );
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document.write( ";<BR>\n" );
document.write( "Check solution<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2F50 ALIGN=MIDDLE  ALT=\"50%2F50\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 1 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=50%2F25 ALIGN=MIDDLE  ALT=\"50%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "1 + 1 = 2  </SPAN>\n" );
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