document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=636128>Question 636128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a car covers the first half of the distance between two places at a speed of 40km/hr and second half at 60 km/hr . calculate the average speed of the car </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #400762 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=400762\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a car covers the first half of the distance between two places at a speed of 40km/hr and second half at 60 km/hr . calculate the average speed of the car<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let x=total distance between the 2 places<BR>\n" );
document.write( "ave speed=distance/travel time<BR>\n" );
document.write( "..<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "=(x/2)/40+(x/2)/60<BR>\n" );
document.write( "=x/80+x/120<BR>\n" );
document.write( "=(80x+120x)/(80*120)<BR>\n" );
document.write( "=200x/9600<BR>\n" );
document.write( "..<BR>\n" );
document.write( "ave speed=x/(200x/9600)=9600/200=48<BR>\n" );
document.write( "average speed of the car=48 km/hr </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );