document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550591>Question 550591</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat travels  60 miles downstream in The same time it takes to go 36 miles upstream. The speed of The boat in still water is 15 mph greater than The speed of The current. Find The speed of The current. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358901 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</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=358901\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let speed of current be x<BR>\n" );
document.write( "speed of boat be y<BR>\n" );
document.write( "y-x=14..........(1)\r<BR>\n" );
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document.write( "60/(y+x)= 36/(y-x)\r<BR>\n" );
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document.write( "60(y-x)=36(y+x)<BR>\n" );
document.write( "/12<BR>\n" );
document.write( "5(y-x)=3(y+x)<BR>\n" );
document.write( "5y-5x=3y+3x<BR>\n" );
document.write( "2y-8x=0<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "y-4x=0..........(2)\r<BR>\n" );
document.write( "\n" );
document.write( "multiply (1) by -4<BR>\n" );
document.write( "-4y+4x=-56<BR>\n" );
document.write( "add this equation to (2)<BR>\n" );
document.write( "-3y=-56<BR>\n" );
document.write( "y=18.66 mph\r<BR>\n" );
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document.write( "y-x=14<BR>\n" );
document.write( "18.66-x=14<BR>\n" );
document.write( "x=4.66 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );