document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=754526>Question 754526</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A young shinobi can row 2 miles against the current in his native river in 15 minutes. He can row 2 miles with the current in 10 minutes. How fast is the current moving? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #459162 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=459162\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A young shinobi can row 2 miles against the current in his native river in 15 minutes. He can row 2 miles with the current in 10 minutes. How fast is the current moving?<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let c=speed of current<BR>\n" );
document.write( "let x=speed of canoe in still water<BR>\n" );
document.write( "(x+c)=speed of canoe downstream<BR>\n" );
document.write( "(x-c)=speed of canoe upstream<BR>\n" );
document.write( "travel time=distance/speed<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2/(x-c)=15/60=1/4<BR>\n" );
document.write( "2/(x+c)=10/60=1/6<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x-c=8<BR>\n" );
document.write( "x+c=12<BR>\n" );
document.write( "subtract:<BR>\n" );
document.write( "-2c=-4<BR>\n" );
document.write( "c=2<BR>\n" );
document.write( "speed of current=2 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );