document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=204079>Question 204079</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If I drive x mph for t hours and then y mph for 2t hours, what is the expression for 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 #154031 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=154031\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If I drive x mph for t hours and then y mph for 2t hours, what is the expression for average speed?<BR>\n" );
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document.write( "average speed = (total distance)/(total time)<BR>\n" );
document.write( "distance = rate*time<BR>\n" );
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document.write( "Partial distance: xt miles<BR>\n" );
document.write( "Partial distance: y*2t miles<BR>\n" );
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document.write( "Total time = t + 2t<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "Average speed = (xt+2yt)/3t = (x+2y)/3 mph<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );