document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=497587>Question 497587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> traveling downstream a certain boat went 9km/h. traveling upstream it only went 1km/h. what is the speed of the current? how fast would the boat go if there were no current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #336762 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=336762\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> traveling downstream a certain boat went 9km/h. traveling upstream it only went 1km/h. what is the speed of the current? how fast would the boat go if there were no current?<BR>\n" );
document.write( "====================================<BR>\n" );
document.write( "Let s = the speed of the boat<BR>\n" );
document.write( "Let c = the speed of the current<BR>\n" );
document.write( "Downstream: s + c = 9<BR>\n" );
document.write( "Upstream:   s - c = 1<BR>\n" );
document.write( "Subtract the 2nd from the 1st:<BR>\n" );
document.write( "2c = 8<BR>\n" );
document.write( "c = 4<BR>\n" );
document.write( "The speed of the current = 4 km/h<BR>\n" );
document.write( "If no current, s = 9 - 4 = 5 km/h </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );