document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=120347>Question 120347</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0785435670/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Bette drives at 60 mph for 2 1/2 hours and at 75 mph for 1 1/2 hours. What is her average rate of speed?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #88216 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=88216\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Bette drives at 60 mph for 2 1/2 hours and at 75 mph for 1 1/2 hours. What is her average rate of speed? <BR>\n" );
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document.write( "1st leg DTA:<BR>\n" );
document.write( "Rate = 60 mph; time = 5/2 hrs: distance = rt = 150 miles<BR>\n" );
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document.write( "2nd leg DATA:<BR>\n" );
document.write( "Rate = 75 mph; time = 3/2 hrs; distance = rt = 112.5 miles<BR>\n" );
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document.write( "Average rate = distance/time<BR>\n" );
document.write( "average = (150+112.5)/(5/2 + 3/2) = 262.5/4 = 65.625 mph<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );