document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=107483>Question 107483</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a river flows at a rate of 3mph and a boat travels 60 miles upstream and returns in a total time of 9 hours. How fast would the boat travel be traveling in still water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #78296 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=78296\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x=\"rate in still water\" ... t=d/r ... 60/(x-3)+60/(x+3)=9 ... 60(x+3)+60(x-3)=9(x+3)(x-3)\r<BR>\n" );
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document.write( "120x=9x^2-81 ... 0=9x^2-120x-81 ... 0=3x^2-40x-27\r<BR>\n" );
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document.write( "use quadratic equation to find x </SPAN>\n" );
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