document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177537>Question 177537</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a motor boat toook 3 hours to make a downstream trip with a 6 km/h current the return trip against the same current took 5 hours find the speed of the boat in still water. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132562 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=132562\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a motor boat took 3 hours to make a downstream trip with a 6 km/h current the return trip against the same current took 5 hours find the speed of the boat in still water.<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Downstream DATA:<BR>\n" );
document.write( "time = 3 hr. ; rate = b+6 km/h ; distance = rt = 3(b+6) km<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Upstream DATA:<BR>\n" );
document.write( "time = 5 hr. ; rate = b-6 km/h ; distance = rt = 5(b-6) km<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "distance down = distance up<BR>\n" );
document.write( "3(b+6) = 4(b-6)<BR>\n" );
document.write( "3b+18 = 4b-24<BR>\n" );
document.write( "b = 42 km/h (speed of the boat in still water)<BR>\n" );
document.write( "=====================================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );