document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=832281>Question 832281</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I can walk to work at 4mph or cycle at 12mph and I save ten minutes if I ride my bike. How far is it to work? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #501957 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39627)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=501957\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Unknown variables are the time t, for walking and the distance to work, d.<BR>\n" );
document.write( "Use the simple travel rate equation, R*T=D.  Do not worry about the ratio of walking to cycling speeds.\r<BR>\n" );
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document.write( "______________speed________time(hours)_______distance<BR>\n" );
document.write( "WALK____________4____________t_______________d<BR>\n" );
document.write( "CYCLE___________12__________t-1/6____________d\r<BR>\n" );
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document.write( "Walking: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4t=d ALIGN=MIDDLE  ALT=\"4t=d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Cycling:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%28t-1%2F6%29=d ALIGN=MIDDLE  ALT=\"12%28t-1%2F6%29=d\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Simplify and try to use in the form of At+Bd=C.<BR>\n" );
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document.write( "Walk equation is like <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4t-d=0 ALIGN=MIDDLE  ALT=\"4t-d=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
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document.write( "Cycle equation, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-2=d ALIGN=MIDDLE  ALT=\"12t-2=d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-d-2=0 ALIGN=MIDDLE  ALT=\"12t-d-2=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-d=2 ALIGN=MIDDLE  ALT=\"12t-d=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "System is now useful as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2812t-d=2%29 ALIGN=MIDDLE  ALT=\"highlight_green%2812t-d=2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%284t-d=0%29 ALIGN=MIDDLE  ALT=\"highlight_green%284t-d=0%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use Elimination Method.  Subtract the second equation from the first, according to the system as just shown:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-d-%284t-d%29=2-0 ALIGN=MIDDLE  ALT=\"12t-d-%284t-d%29=2-0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-d-4t%2Bd=2 ALIGN=MIDDLE  ALT=\"12t-d-4t%2Bd=2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12t-4t=2 ALIGN=MIDDLE  ALT=\"12t-4t=2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6t-2t=1 ALIGN=MIDDLE  ALT=\"6t-2t=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4t=1 ALIGN=MIDDLE  ALT=\"4t=1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28t=1%2F4%29 ALIGN=MIDDLE  ALT=\"highlight%28t=1%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >------A part of the answer resutl.<BR>\n" );
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document.write( "Now find the distance.  Use the simpler original equation for WALKING.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4t=d ALIGN=MIDDLE  ALT=\"4t=d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%281%2F4%29=d ALIGN=MIDDLE  ALT=\"4%281%2F4%29=d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1=d ALIGN=MIDDLE  ALT=\"1=d\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d=1%29 ALIGN=MIDDLE  ALT=\"highlight%28d=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > mile distance to work. </SPAN>\n" );
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