document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890881>Question 890881</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a car travel 100km at a speed of 60km/h and returns with a speed of 40km/h. calculate the average speed for 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 #539360 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=539360\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a car travel 100km at a speed of 60km/h and returns with a speed of 40km/h. calculate the average speed for the whole journey.<BR>\n" );
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document.write( "average speed=distance traveled/time traveled<BR>\n" );
document.write( "total time traveled=100/60+100/40=5/3+5/2=10/6+15/6=25/6<BR>\n" );
document.write( "distance traveled=200<BR>\n" );
document.write( "average speed=200/(25/6)=48<BR>\n" );
document.write( "average speed for the whole journey=48 km/hr </SPAN>\n" );
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