document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=42848>Question 42848</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The time required to drive a fixed distance varies inversely as the speed r.  It takes 5 hr at a speed of 80km/h to drive a fixed distance.  How long will it take to drive the same distance ata speed of 70km/h? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #27916 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=27916\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation for this inverse relation is<BR>\n" );
document.write( "t = k/r<BR>\n" );
document.write( "Now plug in to find k...<BR>\n" );
document.write( "5 = k/80<BR>\n" );
document.write( "k = 400<BR>\n" );
document.write( "Now rewrite it using the new k and plug in the new data...<BR>\n" );
document.write( "t = 400/r<BR>\n" );
document.write( "t = 400/7 hrs or 57 1/7 hours </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );