document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319228>Question 319228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> THE SPEED OF A BOAT IN STILL WATER IS 8 KM/HR.IF HE TAKES SAME TIME IN GOING 20 KM DOWNSTREAM AS IT TAKESIN GOING 12 KM UPSTREAM,FIND THE SPEED OF RIVER? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #228574 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=228574\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> THE SPEED OF A BOAT IN STILL WATER IS 8 KM/HR.<BR>\n" );
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document.write( "IF HE TAKES SAME TIME IN GOING 20 KM DOWNSTREAM AS IT TAKES<BR>\n" );
document.write( "IN GOING 12 KM UPSTREAM,FIND THE SPEED OF RIVER?<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Downstream DATA:<BR>\n" );
document.write( "distance = 20 km ; rate = c+8 kph ; time = 20/(c+8) hrs.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Upstream DATA:<BR>\n" );
document.write( "distance = 12 km ; rate = c-8 kph ; time = 12/(c-8) hrs<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Equation: <BR>\n" );
document.write( "20/(c+8) = 12/(c-8)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "20(c-8) = 12(c+8)<BR>\n" );
document.write( "20c-160 = 12c + 96<BR>\n" );
document.write( "8c = 256<BR>\n" );
document.write( "c = 32 kph (speed of the current)<BR>\n" );
document.write( "======================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );