document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=719661>Question 719661</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Tom's rowboat can travel 7 miles downstream in the same time that it can travel 3mi upstream . If the speed of the current is 1mph , what is Tom's rowing speed 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 #441436 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=441436\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Tom's rowboat can travel 7 miles downstream in the same time that it can travel 3mi upstream . If the speed of the current is 1mph , what is Tom's rowing speed in still water? <BR>\n" );
document.write( "----<BR>\n" );
document.write( "Downstream DATA:<BR>\n" );
document.write( "distance = 7 miles ; rate = b+1 mph ; time = d/r = 7/(b+1) hrs<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Upstream DATA<BR>\n" );
document.write( "distance = 3 miles ; rate = b-1 mph ; time = d/r = 3/(b-1) hrs<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "time = time<BR>\n" );
document.write( "7/(b+1) = 3/(b-1)<BR>\n" );
document.write( "7b-7 = 3b+3<BR>\n" );
document.write( "4b = 10<BR>\n" );
document.write( "b = 2.5 mph (speed of the boat in still water)<BR>\n" );
document.write( "==================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );