document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=327936>Question 327936</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the distance between two towns P and Q is 120 km. A car travelled from P to Q at an average speed of 80km/h. On its return journey, the time taken was 30 minutes shorter. Calculate its 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 #234850 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=234850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> distance between P & q =120 km<BR>\n" );
document.write( "speed = 80km/h<BR>\n" );
document.write( "time taken = 120/80= 4/3 hours<BR>\n" );
document.write( "..<BR>\n" );
document.write( "return trip took 4/3 - 1/2 hour =5/6 hours<BR>\n" );
document.write( "speed = 120/(5/6)<BR>\n" );
document.write( "=120*6/5<BR>\n" );
document.write( "=24*6<BR>\n" );
document.write( "=144km/hour\r<BR>\n" );
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document.write( "Average speed = Total distance / total time\r<BR>\n" );
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document.write( "=120+120 / (4/3+5/6)<BR>\n" );
document.write( "240/(8+5/6)<BR>\n" );
document.write( "240*6/13<BR>\n" );
document.write( "=1440/13<BR>\n" );
document.write( "=110.7 km/hr average speed </SPAN>\n" );
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