document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=499062>Question 499062</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is your average velocity if you drive a<BR>\n" );
document.write( "distance of 115 kmat a speed of 48 km/h, then<BR>\n" );
document.write( "the same distance at a speed of 67 km/h? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #337416 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=337416\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is your average velocity if you drive a<BR>\n" );
document.write( "distance of 115 kmat a speed of 48 km/h, then<BR>\n" );
document.write( "the same distance at a speed of 67 km/h?<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Avg speed for 2 segments of equal distance is<BR>\n" );
document.write( "Avg = 2*48*67/(48 + 67)<BR>\n" );
document.write( "= 55.93 km/hr<BR>\n" );
document.write( "The distance doesn't matter.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "For this problem:<BR>\n" );
document.write( "t = 115/48 + 115/67<BR>\n" );
document.write( "t = 115*( (67+48)/48*67) total time<BR>\n" );
document.write( "r = d/t = 115*2/t<BR>\n" );
document.write( "r = 115*2/115*( (67+48)/48*67) The distance cancels<BR>\n" );
document.write( "r = 2*48*67/(67+48) same as above </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );