document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=924356>Question 924356</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Scott’s boat has a top speed of 6 miles per hour in still water. While traveling on a river at top speed, he went 10 miles upstream in the same amount of time he went 30 miles downstream. Find the rate of the river current. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #560782 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=560782\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = boat speed = 6 mph<BR>\n" );
document.write( "y = current speed<BR>\n" );
document.write( "---<BR>\n" );
document.write( "s = d/t<BR>\n" );
document.write( "---<BR>\n" );
document.write( "up:<BR>\n" );
document.write( "x - y = 10/t<BR>\n" );
document.write( "---<BR>\n" );
document.write( "down:<BR>\n" );
document.write( "x + y = 30/t<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x - y = 10/t<BR>\n" );
document.write( "y = x - 10/t<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + y = 30/t<BR>\n" );
document.write( "y = 30/t - x<BR>\n" );
document.write( "---<BR>\n" );
document.write( "y = x - 10/t<BR>\n" );
document.write( "y = 30/t - x<BR>\n" );
document.write( "x - 10/t = 30/t - x<BR>\n" );
document.write( "2x = 40/t<BR>\n" );
document.write( "x = 20/t<BR>\n" );
document.write( "6 = 20/t<BR>\n" );
document.write( "t = 20/6<BR>\n" );
document.write( "t = 10/3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "y = x - 10/t<BR>\n" );
document.write( "y = 6 - 10/(10/3)<BR>\n" );
document.write( "y = 6 - 3<BR>\n" );
document.write( "y = current speed = 3 mph<BR>\n" );
document.write( "---<BR>\n" );
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document.write( "---<BR>\n" );
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document.write( "---<BR>\n" );
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document.write( "---<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );