document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189258>Question 1189258</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me to solve this question!!\r<BR>\n" );
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document.write( ": one third of a certain journey was covered at the speed of 20 km per hour , one fourth at the rate of 30 km per hour and the rest at the rate of 50 km per hour.<BR>\n" );
document.write( "Find the average speed ( per hour ) of the whole journey ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #820569 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=820569\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1-1%2F3-1%2F4 ALIGN=MIDDLE  ALT=\"1-1%2F3-1%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2F12-4%2F12-3%2F12 ALIGN=MIDDLE  ALT=\"12%2F12-4%2F12-3%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2F12 ALIGN=MIDDLE  ALT=\"5%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the rest at 50 kilom per hr\r<BR>\n" );
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document.write( "          SPEEDS      TIME                  DISTANCE\r\n" );
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document.write( "PART1        20       (d/3)(1/20)               d/3\r\n" );
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document.write( "PART2        30       (d/4)(1/30)               d/4\r\n" );
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document.write( "PART3        50       (5d/12)(1/50)             (5/12)d\r\n" );
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document.write( "SUM                                               d\r\n" );
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document.write( "total distance, d\r<BR>\n" );
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document.write( "total time,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F60%2Bd%2F120%2B%285d%29%2F600 ALIGN=MIDDLE  ALT=\"d%2F60%2Bd%2F120%2B%285d%29%2F600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "AVERAGE SPEED,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%281%2F%281%2F60%2B1%2F20%2B5%2F600%29%29 ALIGN=MIDDLE  ALT=\"cross%281%2F%281%2F60%2B1%2F20%2B5%2F600%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "               <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%281%2F60%2B1%2F120%2B5%2F600%29 ALIGN=MIDDLE  ALT=\"1%2F%281%2F60%2B1%2F120%2B5%2F600%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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