document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286016>Question 286016</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Some friends on a hike leave at 9am and return at 2pm. They spend one-quarter of the total distance walking uphill, one-half walking on level ground, and one-quarter walking downhill. if their speed is 4mph on level ground, 2 mph uphill, and 6 mph downhill,approximately how far did they walk?\r<BR>\n" );
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document.write( "A. 16.9 miles B. 17.2 miles C. 10.6 miles D. 15.3 E. None of these. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207451 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=207451\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Some friends on a hike leave at 9am and return at 2pm.<BR>\n" );
document.write( " They spend one-quarter of the total distance walking uphill, one-half walking<BR>\n" );
document.write( " on level ground, and one-quarter walking downhill. if their speed is 4mph on<BR>\n" );
document.write( " level ground, 2 mph uphill, and 6 mph downhill,approximately how far did they walk? <BR>\n" );
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document.write( "\"Some friends on a hike leave at 9am and return at 2pm.\"; therefore<BR>\n" );
document.write( "Total time of the walk = 5 hrs<BR>\n" );
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document.write( "let d = total distance<BR>\n" );
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document.write( "\"They spend one-quarter of the total distance walking uphill,\"<BR>\n" );
document.write( ".25d = walking uphill<BR>\n" );
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document.write( "\"one-half walking on level ground,\"<BR>\n" );
document.write( ".5d = walking level ground<BR>\n" );
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document.write( "\"and one-quarter walking downhill.\"<BR>\n" );
document.write( ".25d = walking up-hill<BR>\n" );
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document.write( "if their speed is 4mph on level ground, 2 mph uphill, and 6 mph downhill,approximately how far did they walk? <BR>\n" );
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document.write( "Write a time equation; Time = dist/speed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5d%2F4 ALIGN=MIDDLE  ALT=\".5d%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.25d%2F2 ALIGN=MIDDLE  ALT=\".25d%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.25d%2F6 ALIGN=MIDDLE  ALT=\".25d%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5<BR>\n" );
document.write( "multiply by 12, results:<BR>\n" );
document.write( "3(.5d) + 6(.25d) + 2(.25d) = 12(5)<BR>\n" );
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document.write( "1.5d + 1.5d + .5d = 60<BR>\n" );
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document.write( "3.5d = 60<BR>\n" );
document.write( "d = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60%2F3.5 ALIGN=MIDDLE  ALT=\"60%2F3.5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "d ~ 17.2 miles<BR>\n" );
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document.write( "Check solution by finding the total time:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.5%2817.2%29%2F4 ALIGN=MIDDLE  ALT=\".5%2817.2%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.25%2817.2%29%2F2 ALIGN=MIDDLE  ALT=\".25%2817.2%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.25%2817.2%29%2F6 ALIGN=MIDDLE  ALT=\".25%2817.2%29%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > =<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.6%2F4 ALIGN=MIDDLE  ALT=\"8.6%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4.3%2F2 ALIGN=MIDDLE  ALT=\"4.3%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4.3%2F6 ALIGN=MIDDLE  ALT=\"4.3%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > =<BR>\n" );
document.write( "2.15 + 2.15 + .717 = 5.02 ~ 5 hrs<BR>\n" );
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