document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=309802>Question 309802</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the speed of a stream is 4 mph. if a boat travels 74 miles downstream in the same time that it takes to travel 37 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 #221575 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=221575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let the speed of boat in still water be xmph.<BR>\n" );
document.write( "then downstream speed will be x+4<BR>\n" );
document.write( "time taken to travel 74 kms downstream = 74/x+4<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Upstream speed will be x-4 mph.<BR>\n" );
document.write( "time taken for traveling 37 miles = 37/x-4<BR>\n" );
document.write( ".<BR>\n" );
document.write( "both times are same.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "74/x+4 = 37/x-4<BR>\n" );
document.write( "74(x-4)=37(x+4)<BR>\n" );
document.write( "74x-296= 37x + 148<BR>\n" );
document.write( "37x=148+296<BR>\n" );
document.write( "37x= 444<BR>\n" );
document.write( "x= 444/37<BR>\n" );
document.write( "x= 12 mph boat rate in still water\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );