document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=878700>Question 878700</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A certain journey took 40minutes to complete. If half the distance was travelled at an average speed of 100 km/h and the other half was at an average speed of 60 km/h what was the length of the journey. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #530213 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=530213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A certain journey took 40minutes to complete. If half the distance was travelled at an average speed of 100 km/h and the other half was at an average speed of 60 km/h what was the length of the journey.<BR>\n" );
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document.write( "let x=length of the journey<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "100/(x/2)+60/(x/2)=40/60<BR>\n" );
document.write( "200/x+120/x=2/3<BR>\n" );
document.write( "lcd:3x<BR>\n" );
document.write( "600+360=2x<BR>\n" );
document.write( "960=2x<BR>\n" );
document.write( "x=480<BR>\n" );
document.write( "length of the journey=480 km </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );