document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1068136>Question 1068136</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat can go 20 miles against a current in the same time that it can go 60 miles with the current.  The current is 4 mph.  Find the rate of the boat 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 #683299 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=683299\">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( "                 speed     time       distance\r\n" );
document.write( "AGAINST          r-4          t         20\r\n" );
document.write( "WITH             r+4          t         60\r\n" );
document.write( "</PRE>\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20%2F%28r-4%29=60%2F%28r%2B4%29 ALIGN=MIDDLE  ALT=\"20%2F%28r-4%29=60%2F%28r%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for r. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );