document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1027223>Question 1027223</A>: <I><SPAN STYLE=\"word-break: break-all;\"> John walks from town A to town B. He first walks on flat land, and then uphill.<BR>\n" );
document.write( "He then returns to town A along the same route. John’s walking speed on flat land<BR>\n" );
document.write( "is 4 km/h. He walks uphill at a speed of 3 km/h and he walks downhill at a speed<BR>\n" );
document.write( "of 6 km/h. If the entire journey took 6 hours, what is the distance from town A to<BR>\n" );
document.write( "town B? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #642468 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=642468\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> John walks from town A to town B.<BR>\n" );
document.write( " He first walks on flat land, and then uphill.<BR>\n" );
document.write( "He then returns to town A along the same route.<BR>\n" );
document.write( " John’s walking speed on flat land is 4 km/h.<BR>\n" );
document.write( " He walks uphill at a speed of 3 km/h and<BR>\n" );
document.write( " he walks downhill at a speed of 6 km/h.<BR>\n" );
document.write( " If the entire journey took 6 hours, what is the distance from town A to<BR>\n" );
document.write( "town B?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "let f = the distance of the flat<BR>\n" );
document.write( "let h = the distance of the hill<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write a time equation of the round trip. (time = dist/speed<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;\" > = 6<BR>\n" );
document.write( "Common denominator of the hill<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=%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;\" > + <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;\" > = 6<BR>\n" );
document.write( "combine<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;\" > = 6<BR>\n" );
document.write( "get rid of the denominators, multiply thru by 12<BR>\n" );
document.write( "3(2f) + 2(3h) = 12(6)<BR>\n" );
document.write( "6f + 6h = 72<BR>\n" );
document.write( "simplify, divide thru by 6<BR>\n" );
document.write( "f + h = 12 km is the distance from Town A to B<BR>\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );