document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=965093>Question 965093</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In still water, Jacob's sailboat cruises at 16.5 km/h. On the river near their cottage, the boat travels faster downstream than upstream, because of the current. The boat takes 5 hours for a trip upstream but only 2 hours to do the same distance on the return downstream. Determine the speed of the current by jacobs cottage </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #589853 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=589853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In still water, Jacob's sailboat cruises at 16.5 km/h. On the river near their cottage, the boat travels faster downstream than upstream, because of the current. The boat takes 5 hours for a trip upstream but only 2 hours to do the same distance on the return downstream. Determine the speed of the current by jacobs cottage.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let c=speed of current<BR>\n" );
document.write( "16.5+c=speed of sailboat downstream<BR>\n" );
document.write( "16.5-c=speed of sailboat upstream<BR>\n" );
document.write( "travel time*speed=distance<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2(16.5+c)=5(16.5-c)<BR>\n" );
document.write( "33+2c=82.5-5c<BR>\n" );
document.write( "7c=49.5<BR>\n" );
document.write( "c=7.07 km/h </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );