document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29329>Question 29329</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If you drive 2 h at 80 km/h, how fast must you drive during the next hour in order to have an average speed of 75 km/h? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #726963 by </B><A HREF=/tutors/aboutme.mpl?userid=amalm06><B>amalm06(224)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=amalm06><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=amalm06><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=726963\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The total time taken for the trip is 3 hr and the total average speed is 75 km/h.\r<BR>\n" );
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document.write( "For this problem, average speed = average velocity = &#916;x/&#916;t\r<BR>\n" );
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document.write( "Therefore, &#916;x=(75 km/h)(3 hr) = 225 km\r<BR>\n" );
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document.write( "So the displacement for the remaining 1 hr is 225-(2)(80)= 65 km\r<BR>\n" );
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document.write( "Thus, you must drive 65 km/hr (Answer)  </SPAN>\n" );
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