document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=179762>Question 179762</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rewrite in two unknowns. Let x and y represent the tow unknown quantities. Define what x and y are.<BR>\n" );
document.write( "Chuck paddles his canoe 27 km downstream for 3 hours. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #134657 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=134657\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Let <i>x</i> be the rate of speed of the boat in still water.\r<BR>\n" );
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document.write( "Let <i>y</i> be the rate of speed of current in the stream.\r<BR>\n" );
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document.write( "Using the standard relationship between distance, rate, and time (<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large d = rt\"> which is equivalent to <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large r = {d \over t}\">  ). the fact that the rate of speed of the boat relative to the shoreline is the sum of the rate of the boat in still water and the rate of the current (contrast with going upstream where the rate relative to the shore would be the difference between still water speed and the current), and the given values, we can write:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large x + y = \frac {27}{3} = 9\">\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
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