document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=945122>Question 945122</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Susan has to finish a journey of 8 km in 1 hour. for the first half of the journey, she walks at 6 km/h. what should be her speed for the second half of the journey? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #576350 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=576350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Half of the journey is 4 km. At a rate of 6 km/hr, it takes (4 km)/(6 km/hr)=2/3 hr to walk the first half. Since she must finish in 1 hour, she has 20 minutes (1/3 hr) remaining to walk the second 4 km so 4km/(1/3 hr)=12 km/hr<BR>\n" );
document.write( "ANSWER Susan must walk the second half at 12 km/hr to average 8 km/hr\r<BR>\n" );
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