document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=126841>Question 126841</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0131340212/algebrahomeworkh>texas algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Use a system of linear equations to solve the problem.\r<BR>\n" );
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document.write( "On a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current), her averagespeed was 3 mi/h. Find Rita's paddling speed in still water and the speed of the river's current. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #92921 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=92921\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling speed in still water and the speed of the river's current.<BR>\n" );
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document.write( "Let x = speed in still water<BR>\n" );
document.write( "Let y = speed of the current<BR>\n" );
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document.write( "Two equations, one downstream and one downstream<BR>\n" );
document.write( "x + y = 3<BR>\n" );
document.write( "x - y = 2<BR>\n" );
document.write( "-----------adding eliminates y<BR>\n" );
document.write( "2x +0 = 5<BR>\n" );
document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2F2 ALIGN=MIDDLE  ALT=\"5%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x = 2.5 mph in still water<BR>\n" );
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document.write( "Find y using x + y = 3; Substitute 2.5 for x<BR>\n" );
document.write( "2.5 + y = 3<BR>\n" );
document.write( "y = 3 - 2.5<BR>\n" );
document.write( "y = .5 mph is the current<BR>\n" );
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document.write( "Check solution in the upstream equation<BR>\n" );
document.write( "2.5 - .5 = 2 </SPAN>\n" );
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