document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=182578>Question 182578</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The speed of a stream is 5mph. If a boat travels 66 miles down stream in the same time that it takes to travel 33 miles upstream. What is 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 #137064 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=137064\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The speed of a stream is 5mph. If a boat travels 66 miles down stream in the same time that it takes to travel 33 miles upstream. What is the speed of the boat in still water?<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "Call the speed of the boat b<BR>\n" );
document.write( "Going downstream, the speed relative to the dirt is b+5<BR>\n" );
document.write( "Upstream, it's b-5<BR>\n" );
document.write( "t = time<BR>\n" );
document.write( "t = 66/(b+5)<BR>\n" );
document.write( "t = 33/(b-5)<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "66/(b+5) = 33/(b-5)<BR>\n" );
document.write( "66(b-5) = 33(b+5)<BR>\n" );
document.write( "66b-330 = 33b+165<BR>\n" );
document.write( "33b = 495<BR>\n" );
document.write( "b = 15 mph<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );