document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=427553>Question 427553</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me set up this problem:\r<BR>\n" );
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document.write( "\"A canoe can travel 15 mph in still water. Going with the current it can travel 20 miles in the same time that it takes to travel 10 miles against the current. Find 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 #297305 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=297305\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A canoe can travel 15 mph in still water. <BR>\n" );
document.write( "Going with the current it can travel 20 miles in the same time that it takes to travel 10 miles against the current. <BR>\n" );
document.write( "Find the rate of the current<BR>\n" );
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document.write( "With-current DATA:<BR>\n" );
document.write( "distance = 20 miles ; rate = 15+c mph; time = d/r = 20/(15+c) hrs<BR>\n" );
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document.write( "Against-current DATA:<BR>\n" );
document.write( "distance = 10 miles ; rate = 15-c mph; time = d/r = 10/(15-c) hrs<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "time = time<BR>\n" );
document.write( "20/(15+c) = 10/(15-c)<BR>\n" );
document.write( "Cross-multiply to get:<BR>\n" );
document.write( "20(15-c) = 10(15+c)<BR>\n" );
document.write( "300-20c = 150+10c<BR>\n" );
document.write( "30c = 150<BR>\n" );
document.write( "c = 5 mph (speed of the current)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================ </SPAN>\n" );
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