document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=141110>Question 141110</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0130442631/algebrahomeworkh>Prentice hall algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Okay, my last problem and I just can't find a whole answer.  How do I solve using a system of two equations in two variations?\r<BR>\n" );
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document.write( "A salmon swims 100 m in 8 min downstream. Upstream, it would take the fish 20 min to swim the same distance.  What is the rate of the salmon in still water?  What is the rate 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 #102781 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=102781\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let s=salmon and c=current\r<BR>\n" );
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document.write( "upstream __ s-c=100m/20 min __ s-c=5m/min\r<BR>\n" );
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document.write( "downstream __ s+c=100m/8min __ s+c=12.5m/min\r<BR>\n" );
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document.write( "adding the two equations __ s-c+(s+c)=5+12.5 __ 2s=17.5 __ s=8.75m/min\r<BR>\n" );
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document.write( "substituting __ 8.75+c=12.5 __ c=3.75m/min </SPAN>\n" );
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