document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=812439>Question 812439</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A river has a current of 5 miles per hour. If a boat can make a trip of 20 miles upstream and 30 miles downstream in 2 hours, find the rate 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 #489164 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=489164\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=2,<BR>\n" );
document.write( "a*(x+5)=30,<BR>\n" );
document.write( "b*(x-5)=20<BR>\n" );
document.write( "a = 1,   b = 1,   boat in still water = 25<BR>\n" );
document.write( "one hour each way </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );