document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=350769>Question 350769</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The speed of a stream is 4mph. A boat travels 8 miles upstream in the same time it takes to travel 16 miles downstream. What is the speed of the boat in the water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #250752 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=250752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let the speed of boat in still water be x mph<BR>\n" );
document.write( "speed of current 4 mph<BR>\n" );
document.write( "..<BR>\n" );
document.write( "speed upstream = x-4 mph<BR>\n" );
document.write( "speed downstream = x+4\r<BR>\n" );
document.write( "\n" );
document.write( "..<BR>\n" );
document.write( "distance = 8 miles upstream <BR>\n" );
document.write( "time upstream = 8/x-4<BR>\n" );
document.write( "..<BR>\n" );
document.write( "time downstream = 16/x+4)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "both the times are same<BR>\n" );
document.write( "..<BR>\n" );
document.write( "8/(x-4) = 16/(x+4)<BR>\n" );
document.write( "8(x+4)=16(x-4)<BR>\n" );
document.write( "8x+32=16x-64<BR>\n" );
document.write( "16x-8x=64+32<BR>\n" );
document.write( "8x=96<BR>\n" );
document.write( "x= 12 mph speed of boat in still water  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );