document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=414213>Question 414213</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a boat can go 30 miles down stream 3/5th the time that it takes to return the same distance upstream.  If the rate of the current is 3 miles per hour, what is the rate of the boat in still water?\r<BR>\n" );
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document.write( "a. 8mph<BR>\n" );
document.write( "b. 10mph<BR>\n" );
document.write( "c. 12mph<BR>\n" );
document.write( "d. 16mph </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #290557 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=290557\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> speed of boat = xmph<BR>\n" );
document.write( "current speed = 3 mph<BR>\n" );
document.write( "..<BR>\n" );
document.write( "upstream speed = x-3 mph<BR>\n" );
document.write( "downstream speed = x+3 mph<BR>\n" );
document.write( "...<BR>\n" );
document.write( "distance = 30 miles<BR>\n" );
document.write( "(3/5) *30/(x-3) = 30/(x+3)<BR>\n" );
document.write( "18/(x-3)=30/(x+3)<BR>\n" );
document.write( "18(x+3)=30(x-3)<BR>\n" );
document.write( "18x+54=30x-90<BR>\n" );
document.write( "30x-18x=90+54<BR>\n" );
document.write( "12x=144<BR>\n" );
document.write( "/12<BR>\n" );
document.write( "x= 12 mph </SPAN>\n" );
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