document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=170955>Question 170955</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321269470/algebrahomeworkh>Introductory Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Sue walks and jogs to school. She walks at a speed of 5kmh and jogs at a speed of 9kmh. It is 8km to school. She makes it in 1 hour. How far does she jog?\r<BR>\n" );
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document.write( "I know that d=rt but I'm drawing a blank on this one.\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #126214 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=126214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ok.......this isnt written very well but what they are getting at is she walked a portion and jogged a portion of the trip(8km) to school. d=rt.  lets call the distance she walked x and the distance she jogged 8-x. lets the time she walked t and the time she jogged 1-t(1hour altogether). walking rate is 5 and jogging rate is 9<BR>\n" );
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document.write( "x=5t.........eq 1<BR>\n" );
document.write( "8-x=9(1-t)...eq 2<BR>\n" );
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document.write( "take x's value from eq 1 and plug it into eq 2<BR>\n" );
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document.write( "8-5t=9(1-t)<BR>\n" );
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document.write( "8-5t=9-9t<BR>\n" );
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document.write( "4t=1<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=1%2F4 ALIGN=MIDDLE  ALT=\"t=1%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >hour she walked<BR>\n" );
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document.write( "we are after distance she jogged so lets find x ...x=5(1/4)=5/4=1.25..distance she walked<BR>\n" );
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document.write( "distance she jogged is 8-x...<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%288-%281.25%29=6.75%29 ALIGN=MIDDLE  ALT=\"highlight%288-%281.25%29=6.75%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >km </SPAN>\n" );
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