document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23363>Question 23363</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The distance from cambridge to ottawa is 480 jm. Gerry is able to drive at 100 km/h on Highway 401 but can only average 60 k/h on Highway 7. If the trip takes 6 h, how far did he travel on Highway 401.\r<BR>\n" );
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document.write( "Could you solve this please with systems.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12138 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=12138\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Try this:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+r1t1 ALIGN=MIDDLE  ALT=\"d1+=+r1t1\"   DISABLED_style= \"max-width:90%; height:auto;\" > This is the distance traveled on hwy 401 where r1 is 100 km/h<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d2+=+r2t2 ALIGN=MIDDLE  ALT=\"d2+=+r2t2\"   DISABLED_style= \"max-width:90%; height:auto;\" > This is the distance traveled on hwy 7 where r2 is 60 km/h\r<BR>\n" );
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document.write( "The total distance is d1 + d1 = 480 km.<BR>\n" );
document.write( "The total time is t1 + t2 = 6 hours. Rewrite this as: t2 = 6-t1 \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+100%28t1%29 ALIGN=MIDDLE  ALT=\"d1+=+100%28t1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d2+=+60%286-t1%29 ALIGN=MIDDLE  ALT=\"d2+=+60%286-t1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Here, you have substituted for (6-t1) for t2\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+%2B+d2+=+480 ALIGN=MIDDLE  ALT=\"d1+%2B+d2+=+480\"   DISABLED_style= \"max-width:90%; height:auto;\" > so:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100%28t1%29+%2B+60%286-t1%29+=+480 ALIGN=MIDDLE  ALT=\"100%28t1%29+%2B+60%286-t1%29+=+480\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify and solve for t1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100t1+%2B+360+-+60t1+=+480 ALIGN=MIDDLE  ALT=\"100t1+%2B+360+-+60t1+=+480\"   DISABLED_style= \"max-width:90%; height:auto;\" > Collect like-terms.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40t1+%2B+360+=+480 ALIGN=MIDDLE  ALT=\"40t1+%2B+360+=+480\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 360 from both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40t1+=+120 ALIGN=MIDDLE  ALT=\"40t1+=+120\"   DISABLED_style= \"max-width:90%; height:auto;\" > Divide both sides by 40.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t1+=+3 ALIGN=MIDDLE  ALT=\"t1+=+3\"   DISABLED_style= \"max-width:90%; height:auto;\" >hours.\r<BR>\n" );
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document.write( "Now you can find d1, the distance traveled on hwy 401.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+100%28t1%29 ALIGN=MIDDLE  ALT=\"d1+=+100%28t1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+100%283%29 ALIGN=MIDDLE  ALT=\"d1+=+100%283%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d1+=+300 ALIGN=MIDDLE  ALT=\"d1+=+300\"   DISABLED_style= \"max-width:90%; height:auto;\" >Km. The distance traveled on hwy 401. </SPAN>\n" );
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