document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=166929>Question 166929</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977223/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with this word problem (it is #16 on page 171:  Jamie ran two laps around a track in 99 seconds.  How long did it take him to run each lap if he ran the first lap at 8.5 m/s and the second at 8.0 m/s? \r<BR>\n" );
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document.write( "When I solved it I got 51 seconds for the first lap and 48 seconds for the second, which of course is incorrect because he ran faster on the first lap.  I'm not sure what I did wrong.\r<BR>\n" );
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document.write( "Thanks for your help.  I really appreciate it. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #122965 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=122965\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = time of the first lap<BR>\n" );
document.write( "Let y = time of the second lap\r<BR>\n" );
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document.write( "Total time is 99 then x+y=99\r<BR>\n" );
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document.write( " he ran the first lap at 8.5 m/s and the second at 8.0 m/s? \r<BR>\n" );
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document.write( "distance of the first lap = distance of the second lap\r<BR>\n" );
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document.write( "then  8.5x=8y\r<BR>\n" );
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document.write( "so system is\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=99 ALIGN=MIDDLE  ALT=\"x%2By=99\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.5x=8y ALIGN=MIDDLE  ALT=\"8.5x=8y\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=99-x ALIGN=MIDDLE  ALT=\"y=99-x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "then\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.5x+=+8%2899-x%29 ALIGN=MIDDLE  ALT=\"8.5x+=+8%2899-x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8.5x=792-8x ALIGN=MIDDLE  ALT=\"8.5x=792-8x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=16.5x=792 ALIGN=MIDDLE  ALT=\"16.5x=792\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=792%2F16.5=48 ALIGN=MIDDLE  ALT=\"x=792%2F16.5=48\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=51 ALIGN=MIDDLE  ALT=\"y=51\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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