document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207967>Question 207967</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a canoe trip, Rita paddled upstream (against the current) at an average speed of 2mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling seed 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 #157311 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=157311\">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 2mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling sp eed in still water and the speed of the river's current.<BR>\n" );
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document.write( "Upstream DATA:<BR>\n" );
document.write( "rate = 2 mph <BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Downstream DATA:<BR>\n" );
document.write( "rate = 3 mph<BR>\n" );
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document.write( "Let P be paddling speed and c be current speed:<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "p + c = 3 mph<BR>\n" );
document.write( "p - c = 2 mph<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Add to get:<BR>\n" );
document.write( "2p = 5 mph<BR>\n" );
document.write( "p = 2.5 mph (paddling speed)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Substitute to solve for \"c\":<BR>\n" );
document.write( "2.5 + c = 3<BR>\n" );
document.write( "c = 0.5 mph (speed of the current)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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