document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=378087>Question 378087</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me with my math word problem. I know that I need to have to sets of problems to make it a system of equations, but I do not know how to set it up. Here is the problem:\r<BR>\n" );
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document.write( "A man rows a boat 300 feet upstream against a constant current in 10 minutes. He then rows 350 feet downstream (with the same current) in 7 minutes.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #268620 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=268620\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man rows a boat 300 feet upstream against a constant current in 10 minutes. He then rows 350 feet downstream (with the same current) in 7 minutes. <BR>\n" );
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document.write( "The problem is incomplete<BR>\n" );
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document.write( "let speed of boat in still water be x feet/minute<BR>\n" );
document.write( "speed of current be y feet /minute<BR>\n" );
document.write( "upstream speed = x-y <BR>\n" );
document.write( "down stream speed = x+y<BR>\n" );
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document.write( "distance upstream = 300 feet<BR>\n" );
document.write( "distance downstream = 350 feet.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "time dowm stream = time upstream<BR>\n" );
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document.write( "300/(x-y) =10<BR>\n" );
document.write( "10x-10y 300<BR>\n" );
document.write( "/10<BR>\n" );
document.write( "x-y = 30.................1<BR>\n" );
document.write( "350/(x+y)=7<BR>\n" );
document.write( "350 = 7x+7y<BR>\n" );
document.write( "/7<BR>\n" );
document.write( "50 = x+y..................2<BR>\n" );
document.write( "add 1 & 2<BR>\n" );
document.write( "80 = 2x<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "x= 40 feet / minute .... speed of boat in still water<BR>\n" );
document.write( "y =10 feet/minute ..... speed of current.<BR>\n" );
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document.write( "m.ananth@hotmail.ca </SPAN>\n" );
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