document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=303157>Question 303157</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a car travels at 80 kilometers per hours for 40 kilometers, 72 kilometers per hours for 48 kilometers and then 96 kilometers per hours for 32 kilometers. what is the average rate of speed over the entire trip </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #217266 by </B><A HREF=/tutors/aboutme.mpl?userid=CharlesG2><B>CharlesG2(834)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CharlesG2><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=217266\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a car travels at 80 kilometers per hours for 40 kilometers, 72 kilometers per hours for 48 kilometers and then 96 kilometers per hours for 32 kilometers. what is the average rate of speed over the entire trip\r<BR>\n" );
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document.write( "D distance = R rate * T time<BR>\n" );
document.write( "40 * km = 80 * km/hr * T1<BR>\n" );
document.write( "40/80 * km * hr/km = T1<BR>\n" );
document.write( "1/2 hr = T1<BR>\n" );
document.write( "48 * km = 72 * km/hr * T2<BR>\n" );
document.write( "48/72 * km * hr/km = T2<BR>\n" );
document.write( "2/3 hr = T2<BR>\n" );
document.write( "32 * km = 96 * km/hr * T3<BR>\n" );
document.write( "32/96 * km * hr/km = T3<BR>\n" );
document.write( "1/3 hr = T3<BR>\n" );
document.write( "T = T1 + T2 + T3 = 1/2 + 2/3 + 1/3 = 1 1/2 = 3/2 = 1.5 hrs<BR>\n" );
document.write( "D = D1 + D2 + D3 = 40 + 48 + 32 = 120 km<BR>\n" );
document.write( "R = D/T = 120/1.5 = 80 km/hr average rate of speed\r<BR>\n" );
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document.write( " </SPAN>\n" );
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