document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1072052>Question 1072052</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The worlds's strongest current, reaching 7 miles per hour, is the Saltstraumen in Norway.  A motorboat can travel 54 miles downstream in the Saltstraumen in the same time it takes to go 18 miles upstream.  What is the speed of the boat i 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 #686956 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=686956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let n be the speed of the boat in still water; and the current is 7 mph. So:<BR>\n" );
document.write( "54/n+7=18/n-7<BR>\n" );
document.write( "18n+126=54n-378<BR>\n" );
document.write( "36n=504<BR>\n" );
document.write( "n=14 mph as the speed of the boat in still water. &#9786;&#9786;&#9786;&#9786; </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );