document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=184813>Question 184813</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve Problems Using Linear Systems<BR>\n" );
document.write( "15. A motor boat took 5h to travel a distance of 60 km up a river, against the current. The return trip took 3h. Find the average speed of the boat in still water and the speed of the current.<BR>\n" );
document.write( "Thank you sooooooo much!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #138707 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=138707\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"A motor boat took 5h to travel a distance of 60 km up a river\" ___ so b-c=60/5 or 12\r<BR>\n" );
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document.write( "\"The return trip took 3h\" ___ so b+c=60/3 or 20\r<BR>\n" );
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document.write( "adding equations ___ (b-c)+(b+c) = 12+20 ___ 2b = 32 ___ b=16\r<BR>\n" );
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document.write( "substituting __ (16)+c = 20 ___ c = 4 </SPAN>\n" );
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