document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=825483>Question 825483</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A runner splits her journey into two parts.  She travels at a speed of v m/s for t seconds<BR>\n" );
document.write( "and covered a third of the journey.  Then she continued the rest of her journey at twice<BR>\n" );
document.write( "the speed. Express in terms of v and t her average speed. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #497334 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=497334\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ---<BR>\n" );
document.write( "s = d/t<BR>\n" );
document.write( "d = s*t<BR>\n" );
document.write( "t = d/s<BR>\n" );
document.write( "---<BR>\n" );
document.write( "part 1:<BR>\n" );
document.write( "t1 = (1/3)d/v<BR>\n" );
document.write( "---<BR>\n" );
document.write( "part 2:<BR>\n" );
document.write( "t2 = (2/3)d/2v<BR>\n" );
document.write( "---<BR>\n" );
document.write( "total trip average speed:<BR>\n" );
document.write( "t = t1 + t2<BR>\n" );
document.write( "s = d/t<BR>\n" );
document.write( "s = d/( (1/3)d/v + (2/3)d/2v )<BR>\n" );
document.write( "s = d/( (1/3)d/v + (1/3)d/v )<BR>\n" );
document.write( "s = d/( (2/3)d/v )<BR>\n" );
document.write( "s = 1/( (2/3)/v )<BR>\n" );
document.write( "s = v/(2/3)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "s = (3/2)v<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve systems of linear equations up to 4-equations 4-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );