document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1021016>Question 1021016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> At 8:00 am Nancy took off down a river in her boat heading north. Two hours later, William takes off down the same river in his boat also heading north. Nancy's boat speed is 3km/hour more than William's. At 12:00 pm, Nancy is 44 km ahead of William. What is the speed of each boat? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #636836 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=636836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = Nancy's boat speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+-+3+ ALIGN=MIDDLE  ALT=\"+s+-+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = William's boat speed<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Nancy's head start is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d%5B1%5D+=+s%2A2+ ALIGN=MIDDLE  ALT=\"+d%5B1%5D+=+s%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Time the boats from 10 PM to 12 PM<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 in km from Nancy's <BR>\n" );
document.write( "starting point at 10 PM<BR>\n" );
document.write( "Nancy's equation:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+s%2A2+ ALIGN=MIDDLE  ALT=\"+d+=+s%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "William's equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+%2B+d%5B1%5D+-+44+=+%28+s+-+3+%29%2A2+ ALIGN=MIDDLE  ALT=\"+d+%2B+d%5B1%5D+-+44+=+%28+s+-+3+%29%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+%2B+2s+-+44+=+%28+s+-+3+%29%2A2+ ALIGN=MIDDLE  ALT=\"+d+%2B+2s+-+44+=+%28+s+-+3+%29%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "Substitute (1) into (2)<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2s+%2B+2s+-+44+=+%28+s+-+3+%29%2A2+ ALIGN=MIDDLE  ALT=\"+2s+%2B+2s+-+44+=+%28+s+-+3+%29%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4s+-+44+=+2s+-+6+ ALIGN=MIDDLE  ALT=\"+4s+-+44+=+2s+-+6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4s+-+2s+=+38+ ALIGN=MIDDLE  ALT=\"+4s+-+2s+=+38+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2s+=+38+ ALIGN=MIDDLE  ALT=\"+2s+=+38+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+19+ ALIGN=MIDDLE  ALT=\"+s+=+19+\"   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=+s+-+3+=+16+ ALIGN=MIDDLE  ALT=\"+s+-+3+=+16+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Nancy's speed is 19 km/hr<BR>\n" );
document.write( "William's speed is 16 km/hr<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+s%2A2+ ALIGN=MIDDLE  ALT=\"+d+=+s%2A2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+2%2A19+ ALIGN=MIDDLE  ALT=\"+d+=+2%2A19+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+d+=+38+ ALIGN=MIDDLE  ALT=\"+d+=+38+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "From 8PM to 10 PM, Nancy goes <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+19%2A2+=+38+ ALIGN=MIDDLE  ALT=\"+19%2A2+=+38+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "From 10 PM to 12 PM, Nancy goes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+19%2A2+=+38+ ALIGN=MIDDLE  ALT=\"+19%2A2+=+38+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "In the 4 hrs, she has gone <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2A38+=+76+ ALIGN=MIDDLE  ALT=\"+2%2A38+=+76+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "From 10 PM to 12 PM, William goes<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+16%2A2+=+32+ ALIGN=MIDDLE  ALT=\"+16%2A2+=+32+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+76+-+32+=+44+ ALIGN=MIDDLE  ALT=\"+76+-+32+=+44+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km<BR>\n" );
document.write( "He is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+44+ ALIGN=MIDDLE  ALT=\"+44+\"   DISABLED_style= \"max-width:90%; height:auto;\" > km behind her<BR>\n" );
document.write( "Hope I got it! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );