document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1151347>Question 1151347</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Bus travels from Boston to New York 100km/h and back 80km/h. What was the average speed?<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 #773088 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52914)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=773088\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "See the lesson\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A / rel=nofollow HREF=http://www.algebra.com/algebra/homework/word/travel/Calculating-an-average-speed.lesson>Calculating an average speed: a train going from A to B and back</A> \r<BR>\n" );
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document.write( "in this site, &nbsp;and learn from there on how to solve such problems.\r<BR>\n" );
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document.write( "There is a general formula for the average speed of the forth and back trip\r<BR>\n" );
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document.write( "    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V%5Baverage%5D ALIGN=MIDDLE  ALT=\"V%5Baverage%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282%2AV%5B1%5D%2AV%5B2%5D%29%2F%28V%5B1%5D%2BV%5B2%5D%29 ALIGN=MIDDLE  ALT=\"%282%2AV%5B1%5D%2AV%5B2%5D%29%2F%28V%5B1%5D%2BV%5B2%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,\r<BR>\n" );
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document.write( "which you can learn from this lesson, also.\r<BR>\n" );
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document.write( "By substituting the given data into the formula, you get the answer momentarily\r<BR>\n" );
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document.write( "    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=V%5Baverage%5D ALIGN=MIDDLE  ALT=\"V%5Baverage%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282%2A100%2A80%29%2F%28100%2B80%29 ALIGN=MIDDLE  ALT=\"%282%2A100%2A80%29%2F%28100%2B80%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=16000%2F180 ALIGN=MIDDLE  ALT=\"16000%2F180\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1600%2F18 ALIGN=MIDDLE  ALT=\"1600%2F18\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=800%2F9 ALIGN=MIDDLE  ALT=\"800%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" > km/h.\r<BR>\n" );
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document.write( "consistent with the other tutors.\r<BR>\n" );
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document.write( "I do not convince you to memorize this formula.\r<BR>\n" );
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document.write( "But every student, who is competent in Math or who wants to be considered as competent in Math, <BR>\n" );
document.write( "must know that such formula does exist and should be able to deduce and to apply it (!)\r<BR>\n" );
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document.write( "How @MathLover1 treats this problem, it is a classic example on how this problem &nbsp;<U>SHOULD &nbsp;NOT</U> &nbsp;be treated.\r<BR>\n" );
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document.write( "Every textbook and every teacher explains it to their students with all needed warnings (!) (!) (!)\r<BR>\n" );
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