document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=398296>Question 398296</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Junior’s boat will go 15 miles per<BR>\n" );
document.write( "hour in still water. If he can go 12 miles downstream in the<BR>\n" );
document.write( "same amount of time as it takes to go 9 miles upstream,<BR>\n" );
document.write( "then what is the speed of the current?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #282266 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=282266\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Junior’s boat will go 15 miles per<BR>\n" );
document.write( "hour in still water. If he can go 12 miles downstream in the<BR>\n" );
document.write( "same amount of time as it takes to go 9 miles upstream,<BR>\n" );
document.write( "then what is the speed of the current?\r<BR>\n" );
document.write( "\n" );
document.write( "..<BR>\n" );
document.write( "speed of current = x mph<BR>\n" );
document.write( "boat speed = 15 mph<BR>\n" );
document.write( "...<BR>\n" );
document.write( "t = d/r<BR>\n" );
document.write( "t upstream = t downstream<BR>\n" );
document.write( "9/(15-x)= 12/(15+x)<BR>\n" );
document.write( "9(15+x)=12(15-x)<BR>\n" );
document.write( "/3<BR>\n" );
document.write( "3(15+x)=4(15-x)<BR>\n" );
document.write( "45+3x=60-4x<BR>\n" );
document.write( "3x+4x=60-45<BR>\n" );
document.write( "7x=15<BR>\n" );
document.write( "/7<BR>\n" );
document.write( "x= 2.14 mph current speed\r<BR>\n" );
document.write( "\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );