document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1168185>Question 1168185</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a boat traveled 176 miles each way downstream and back.  The trip downstream took 11 hours.  The trip upstream took 22 hours.  What is the boat's speed in still water?  what is the speed of the current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #792811 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</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=792811\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> r, boat without current<BR>\n" );
document.write( "c, current's speed\r<BR>\n" );
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document.write( "         SPEED       TIME      DISTANCE\r\n" );
document.write( "DOWN      r+c         11         176\r\n" );
document.write( "UPSTR     r-c         22         176\r\n" );
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document.write( "Using <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S=D%2FT ALIGN=MIDDLE  ALT=\"S=D%2FT\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The downstream data gives you  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%2Bc=176%2F11=16 ALIGN=MIDDLE  ALT=\"r%2Bc=176%2F11=16\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "The upstream data gives you <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r-c=176%2F22=8 ALIGN=MIDDLE  ALT=\"r-c=176%2F22=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "This system can easily be solved using Elimination Method:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28r%2Bc=16%2Cr-c=8%29 ALIGN=MIDDLE  ALT=\"system%28r%2Bc=16%2Cr-c=8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Add the corresponding members to eliminate c, and quickly find value for r.<BR>\n" );
document.write( "Now, any method you like, easily find the value for .\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28highlight%28r=12%29%2Cand%2Chighlight%28c=4%29%29 ALIGN=MIDDLE  ALT=\"system%28highlight%28r=12%29%2Cand%2Chighlight%28c=4%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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