document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=214012>Question 214012</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780078778520/algebrahomeworkh>california algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Travel:<BR>\n" );
document.write( "Connor is driving 65 miles per hour on the highway. Ed is 15 miles behind him driving at 70 miles per hour.  After how may hours will ED catch up to Connor?\r<BR>\n" );
document.write( "\n" );
document.write( "I learned about d=rt but I can't seem to get this one.  I understand that it is pushing me to think, but... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #161658 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=161658\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Imagine you have a stopwatch. You start it at <BR>\n" );
document.write( "the exact moment that Ed is 15 mi behind Connor.<BR>\n" );
document.write( "You will stop the stopwatch at the exact moment<BR>\n" );
document.write( "Ed catches Connor. That means they are both<BR>\n" );
document.write( "going to be driving for the same length of time.<BR>\n" );
document.write( "You also know that Ed will have to drive 15 mi more<BR>\n" );
document.write( "than Connor to catch him.<BR>\n" );
document.write( "----------------------------------------------<BR>\n" );
document.write( "You need 2 sets of equations, one for each driver<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+=+r%5Bc%5D%2At%5Bc%5D ALIGN=MIDDLE  ALT=\"d%5Bc%5D+=+r%5Bc%5D%2At%5Bc%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Be%5D+=+r%5Be%5D%2At%5Be%5D ALIGN=MIDDLE  ALT=\"d%5Be%5D+=+r%5Be%5D%2At%5Be%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You already know that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5Bc%5D+=+t%5Be%5D ALIGN=MIDDLE  ALT=\"t%5Bc%5D+=+t%5Be%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > (call them both <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" >)<BR>\n" );
document.write( "And <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Be%5D+=+d%5Bc%5D+%2B+15 ALIGN=MIDDLE  ALT=\"d%5Be%5D+=+d%5Bc%5D+%2B+15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "given:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5Bc%5D+=+65 ALIGN=MIDDLE  ALT=\"r%5Bc%5D+=+65\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5Be%5D+=+70 ALIGN=MIDDLE  ALT=\"r%5Be%5D+=+70\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now rewrite the equations<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+=+65t ALIGN=MIDDLE  ALT=\"d%5Bc%5D+=+65t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+%2B+15+=+70t ALIGN=MIDDLE  ALT=\"d%5Bc%5D+%2B+15+=+70t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "And by substitution,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=65t+%2B+15+=+70t ALIGN=MIDDLE  ALT=\"65t+%2B+15+=+70t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5t+=+15 ALIGN=MIDDLE  ALT=\"5t+=+15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t+=+3 ALIGN=MIDDLE  ALT=\"t+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "Ed will catch Connor in 3 hrs<BR>\n" );
document.write( "check answer:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+=+65t ALIGN=MIDDLE  ALT=\"d%5Bc%5D+=+65t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+=+65%2A3 ALIGN=MIDDLE  ALT=\"d%5Bc%5D+=+65%2A3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+=+195 ALIGN=MIDDLE  ALT=\"d%5Bc%5D+=+195\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi<BR>\n" );
document.write( "and<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%5Bc%5D+%2B+15+=+70t ALIGN=MIDDLE  ALT=\"d%5Bc%5D+%2B+15+=+70t\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=195+%2B+15+=+70%2A3 ALIGN=MIDDLE  ALT=\"195+%2B+15+=+70%2A3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=210+=+210 ALIGN=MIDDLE  ALT=\"210+=+210\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
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document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );