document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040310>Question 1040310</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Olivia traveled 25 miles in 30 minutes, and then she traveled for an additional<BR>\n" );
document.write( "20 minutes. If her average speed for the entire trip was 36 miles per hour<BR>\n" );
document.write( "(mph), what was her average speed for the final 20 minutes of the trip? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655101 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=655101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Olivia traveled 25 miles in 30 minutes, and then she traveled for an additional<BR>\n" );
document.write( "20 minutes. If her average speed for the entire trip was 36 miles per hour<BR>\n" );
document.write( "(mph), what was her average speed for the final 20 minutes of the trip? <BR>\n" );
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document.write( "1st leg DATA:: dist = 25 miles ; time = 30 min = (1/2) hour<BR>\n" );
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document.write( "2nd leg DATA:: dist = x miles ; time = (1/3) hour<BR>\n" );
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document.write( "Average speed =  total distance / total time = (25+x)/(5/6 hour) = 30 + (6/5)x mph<BR>\n" );
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document.write( " Equation:<BR>\n" );
document.write( "(20 + (6/5)x) mph = 36 mph<BR>\n" );
document.write( "(6/5)x = 16<BR>\n" );
document.write( "x = 80/6 miles (2nd leg distance)<BR>\n" );
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document.write( "Ans: 2nd leg speed = dist/time = (80/6)/(1/5) = 400/6 = 66 2/3 mph<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );