document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=747320>Question 747320</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat running at its' top speed takes 3.0 hours to travel 12 km down a river. It then takes 5.0 hours to return to its' starting place. What is the velocity of the river? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #454882 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=454882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A boat running at its' [sic] top speed takes 3.0 hours to travel 12 km down a river. It then takes 5.0 hours to return to its' [sic] starting place. What is the velocity of the river?<BR>\n" );
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document.write( "downstream speed = 12/3 = 4 km/hr<BR>\n" );
document.write( "upstream speed = 12/5 = 2.4 km/hr<BR>\n" );
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document.write( "The boat's speed is the average = (4 + 2.4)/2 = 3.2 km/hr<BR>\n" );
document.write( "Current is the difference = 4 - 3.2 = 0.8 km/hr<BR>\n" );
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document.write( "PS  There's no its' in English.  It's its. </SPAN>\n" );
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