document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1065619>Question 1065619</A>: <I><SPAN STYLE=\"word-break: break-all;\">   The boat takes 30 minutes to get 10 miles downstream and one hour to get back.find the speed of the boat and 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 #680785 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39630)</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=680785\">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( "DOWN          r+c         0.5        10\r\n" );
document.write( "UP            r-c         1.0        10\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=%28RATE%29%2A%28TIME%29=DISTANCE ALIGN=MIDDLE  ALT=\"%28RATE%29%2A%28TIME%29=DISTANCE\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%28%28r%2Bc%29%281%2F2%29=10%2Cr-c=d%29 ALIGN=MIDDLE  ALT=\"system%28%28r%2Bc%29%281%2F2%29=10%2Cr-c=d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "Solve this for r and c. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );