document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1127952>Question 1127952</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone help me break this down?  I have been working on it for an hour and I keep getting the wrong answer.  Thank you.\r<BR>\n" );
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document.write( "During the first part of a&#8203; trip, a canoeist covered 70 km at a certain speed. He then traveled 30 km at a speed that was 4 &#8203;km/h slower. If the total time for the trip was 8 &#8203;hr, what was the speed on each part of the&#8203; trip? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744414 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=744414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
document.write( "                  speeds        times         distances\r\n" );
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document.write( "first part         r            70/r           70\r\n" );
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document.write( "second part       r-4           30/(r-4)       30\r\n" );
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document.write( "total                           8\r\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70%2Fr%2B30%2F%28r-4%29=8 ALIGN=MIDDLE  ALT=\"70%2Fr%2B30%2F%28r-4%29=8\"   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=35%2Fr%2B15%2F%28r-4%29=4 ALIGN=MIDDLE  ALT=\"35%2Fr%2B15%2F%28r-4%29=4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "simplifies into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2r%5E2-33r%2B70=0 ALIGN=MIDDLE  ALT=\"2r%5E2-33r%2B70=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "discriminant, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=33%5E2-4%2A2%2A70=529=23%5E2 ALIGN=MIDDLE  ALT=\"33%5E2-4%2A2%2A70=529=23%5E2\"   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=r=%2833%2B23%29%2F4 ALIGN=MIDDLE  ALT=\"r=%2833%2B23%29%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" >  because you will find the MINUS form will not work;\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28r=13%263%2F4%29 ALIGN=MIDDLE  ALT=\"highlight%28r=13%263%2F4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >-------for the first part of trip. </SPAN>\n" );
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