document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=815208>Question 815208</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1 Jane and Peter leave their home traveling in opposite directions on a straight road.  Peter drives 15 miles per hour faster than Jane.  After three hours, they are 225 miles apart.  Find Peter’s rate and Jane’s rate.\r<BR>\n" );
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document.write( "2 Noya drives into the city to buy a computer program.  Due to traffic conditions, she averages only 15 mi/h.  On her drive home, she averages 35 mi/h.  If her total travel time is 2 hours, how long did it take her to drive to the computer store?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #490788 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=490788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Think of this as Jane standing still and<BR>\n" );
document.write( "Peter moving away from her at the sum of their speeds<BR>\n" );
document.write( "Let Jane's speed in mi/hr = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Peter's speed = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+15+ ALIGN=MIDDLE  ALT=\"+s+%2B+15+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "When Peter is 225 mi from Jane:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+225+=+%28+s+%2B+s+%2B+15+%29%2A3+ ALIGN=MIDDLE  ALT=\"+225+=+%28+s+%2B+s+%2B+15+%29%2A3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+225+=+%28+2s+%2B+15+%29%2A3+ ALIGN=MIDDLE  ALT=\"+225+=+%28+2s+%2B+15+%29%2A3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6s+%2B+45+=+225+ ALIGN=MIDDLE  ALT=\"+6s+%2B+45+=+225+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6s+=+180+ ALIGN=MIDDLE  ALT=\"+6s+=+180+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+30+ ALIGN=MIDDLE  ALT=\"+s+=+30+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+15+=+45+ ALIGN=MIDDLE  ALT=\"+s+%2B+15+=+45+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Jane's rate is 30 mi/hr<BR>\n" );
document.write( "Peter's rate is 45 mi/hr<BR>\n" );
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document.write( "Average speed = ( total distance ) / ( total time )<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+ ALIGN=MIDDLE  ALT=\"+d+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = distance from home to city<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15+=+d+%2F+t%5B1%5D+ ALIGN=MIDDLE  ALT=\"+15+=+d+%2F+t%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+15t%5B1%5D+ ALIGN=MIDDLE  ALT=\"+d+=+15t%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi<BR>\n" );
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document.write( "Going back home:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+15t%5B1%5D+=+35%2At%5B2%5D+ ALIGN=MIDDLE  ALT=\"+15t%5B1%5D+=+35%2At%5B2%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3%2At%5B1%5D+=+7t%5B2%5D%0D%0A%7B%7B%7B+t%5B2%5D+=+%283%2F7%29%2At%5B1%5D+ ALIGN=MIDDLE  ALT=\"+3%2At%5B1%5D+=+7t%5B2%5D%0D%0A%7B%7B%7B+t%5B2%5D+=+%283%2F7%29%2At%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "also:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+%2B+t%5B2%5D=+2+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+%2B+t%5B2%5D=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "By substitution:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+%2B+%283%2F7%29%2At%5B1%5D+=+2+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+%2B+%283%2F7%29%2At%5B1%5D+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D%28+7%2F7+%2B+3%2F7+%29+=+2+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D%28+7%2F7+%2B+3%2F7+%29+=+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D%2A%28+7+%2B+3+%29+=+14+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D%2A%28+7+%2B+3+%29+=+14+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+=+14%2F10+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+=+14%2F10+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+=+7%2F5+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+=+7%2F5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t%5B1%5D+=+1.4+ ALIGN=MIDDLE  ALT=\"+t%5B1%5D+=+1.4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+.4%2A60+=+24+ ALIGN=MIDDLE  ALT=\"+.4%2A60+=+24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Her time going to the store was 1 hr 24 min </SPAN>\n" );
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