document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=807588>Question 807588</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two trains (local and express) start at the same time going from A to B<BR>\n" );
document.write( "The express train travels 120km and averages 20km per hour faster than the local train. If the local train still has 80km to go when the express train arrives at B, what is the average speed of the express train?\r<BR>\n" );
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document.write( "D=RT<BR>\n" );
document.write( "express train 120km, rate is x+20...time is 120/x+20\r<BR>\n" );
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document.write( "local train is 40km..rate is x...time is 40/x<BR>\n" );
document.write( "i think im off to the right start...help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #486411 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10552)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=486411\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two trains (local and express) start at the same time going from A to B<BR>\n" );
document.write( "The express train travels 120km and averages 20km per hour faster than the local train. If the local train still has 80km to go when the express train arrives at B, what is the average speed of the express train?\r<BR>\n" );
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document.write( "D=RT<BR>\n" );
document.write( "express train 120km, rate is x+20...time is 120/x+20\r<BR>\n" );
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document.write( "local train is 40km..rate is x...time is 40/x<BR>\n" );
document.write( "i think im off to the right start...help!\r<BR>\n" );
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document.write( "Yes, You are!! \r<BR>\n" );
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document.write( "Anyway, since you're seeking the express train's speed, I'd let that speed be x, which makes the local train's speed, x - 20. You then equate their times: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=120%2Fx+=+40%2F%28x+-+20%29 ALIGN=MIDDLE  ALT=\"120%2Fx+=+40%2F%28x+-+20%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Solve this for x and you'll have the express train's speed.\r<BR>\n" );
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document.write( "Express train's speed: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2830%29 ALIGN=MIDDLE  ALT=\"highlight_green%2830%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > km/h\r<BR>\n" );
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document.write( "You can do the check!! \r<BR>\n" );
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document.write( "Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com. Further help is available, online or in-person, for a fee, obviously. \r<BR>\n" );
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