document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=739132>Question 739132</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Running at an average rate of 6 meters per<BR>\n" );
document.write( "second, a sprinter ran to the end of a track. The sprinter then<BR>\n" );
document.write( "jogged back to the starting point at an average rate of 2 meters<BR>\n" );
document.write( "per second. The total time for the sprint and the jog back was<BR>\n" );
document.write( "2 minutes 40 seconds. Find the length of the track. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #451023 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=451023\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Running at an average rate of 6 meters per second, a sprinter ran to the end of a track.<BR>\n" );
document.write( " The sprinter then jogged back to the starting point at an average rate of 2 meters per second.<BR>\n" );
document.write( " The total time for the sprint and the jog back was 2 minutes 40 seconds.<BR>\n" );
document.write( " Find the length of the track.<BR>\n" );
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document.write( "Since we are dealing in m/sec, change 2 min 40 sec to 160 seconds<BR>\n" );
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document.write( "let d = the length of the track<BR>\n" );
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document.write( "Write a time equation; time = dist/speed<BR>\n" );
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document.write( "Sprint time + jog time = 2 min 40 sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F6 ALIGN=MIDDLE  ALT=\"d%2F6\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F2 ALIGN=MIDDLE  ALT=\"d%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 160<BR>\n" );
document.write( "mult by 6 to clear the denominators<BR>\n" );
document.write( "d + 3d = 6(160)<BR>\n" );
document.write( "4d = 960<BR>\n" );
document.write( "d = 240 meters is the length of the track<BR>\n" );
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document.write( "Check this:<BR>\n" );
document.write( "240/6 = 40 sec<BR>\n" );
document.write( "240/2 = 120 sec<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "tot time 160 sec\r<BR>\n" );
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document.write( " </SPAN>\n" );
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