document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=114861>Question 114861</A>: <I><SPAN STYLE=\"word-break: break-all;\"> With the old 55m.p.h. speed limit it used to take Shawn 2 more hours to drive to visit his parents' home than it does with the new 65m.p.h. limit.  How ong does it take him to driver there now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #86172 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=86172\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the time to make the trip at 65 mph be t.  Then the time to make the trip at 55 mph is t + 2.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So one expression for the distance using <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d=rt ALIGN=MIDDLE  ALT=\"d=rt\"   DISABLED_style= \"max-width:90%; height:auto;\" > is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65t ALIGN=MIDDLE  ALT=\"65t\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  And another expression for the same distance is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=55%28t%2B2%29 ALIGN=MIDDLE  ALT=\"55%28t%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Since these expressions are for the same distance, we can say that they are equal.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65t=55%28t%2B2%29 ALIGN=MIDDLE  ALT=\"65t=55%28t%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65t-55t=110 ALIGN=MIDDLE  ALT=\"65t-55t=110\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10t=110 ALIGN=MIDDLE  ALT=\"10t=110\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=11 ALIGN=MIDDLE  ALT=\"t=11\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  It takes 11 hours to drive there now.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Check:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65%2A11=715 ALIGN=MIDDLE  ALT=\"65%2A11=715\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so the trip must be 715 miles.  The trip at 55 must have taken 11 + 2 or 13 hours, so check <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=55%2A13=715 ALIGN=MIDDLE  ALT=\"55%2A13=715\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );