document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=421877>Question 421877</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man walks for 2 hours - on the way there he walks straight at 4/km per hour and uphill to the point at 3/km per hour. On the way back he walks downhill at 6/km per hour and straight at 4/km per hour. How many kilometers has he travelled in total after 2 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294568 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=294568\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man walks for 2 hours - on the way there he walks straight at 4/km per hour<BR>\n" );
document.write( " and uphill to the point at 3/km per hour.<BR>\n" );
document.write( "On the way back he walks downhill at 6/km per hour and straight at 4/km per hour.<BR>\n" );
document.write( " How many kilometers has he traveled in total after 2 hours?<BR>\n" );
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document.write( "Let f = dist of level ground<BR>\n" );
document.write( "Let h = dist of the hill<BR>\n" );
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document.write( "Write a time equation: Time = dist/speed<BR>\n" );
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document.write( "lev time + uphill time + downhill time + lev time = 2 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2F4 ALIGN=MIDDLE  ALT=\"f%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2F3 ALIGN=MIDDLE  ALT=\"h%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2F6 ALIGN=MIDDLE  ALT=\"h%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%2F4 ALIGN=MIDDLE  ALT=\"f%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2<BR>\n" );
document.write( "combine like terms, use common denominator for the hill times<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282f%29%2F4 ALIGN=MIDDLE  ALT=\"%282f%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282h%29%2F6 ALIGN=MIDDLE  ALT=\"%282h%29%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%2F6 ALIGN=MIDDLE  ALT=\"h%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282f%29%2F4 ALIGN=MIDDLE  ALT=\"%282f%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283h%29%2F6 ALIGN=MIDDLE  ALT=\"%283h%29%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 2<BR>\n" );
document.write( ";<BR>\n" );
document.write( "Multiply by 12, results<BR>\n" );
document.write( "3(2f) + 2(3h) = 12(2)<BR>\n" );
document.write( "6f + 6h = 24<BR>\n" );
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document.write( "Simplify, divide by 6<BR>\n" );
document.write( "f + h = 4 km is one way distance<BR>\n" );
document.write( "therefore<BR>\n" );
document.write( "total dist in 2 hrs = 8 km <BR>\n" );
document.write( " </SPAN>\n" );
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