document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143508>Question 143508</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am so confused about this question, I don't know where to start. This is how it was typed on the word document. <BR>\n" );
document.write( ".  Jack was able to travel 30 miles downstream in 2 hours.  In returning upstream, it took 3 hours to make the trip.  How fast can his boat travel in still water?  What was the rate of the river current?<BR>\n" );
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document.write( "2(r+c)=30--->2r+2c=30-->6r+6c=90 <BR>\n" );
document.write( "3(r-c)=30---->3r-3c=30--> 6r+6c=60 <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104434 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104434\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Minor error is causing you grief\r<BR>\n" );
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document.write( "2(r+c)=30--->2r+2c=30-->6r+6c=90 <BR>\n" );
document.write( "3(r-c)=30---->3r-3c=30--> 6r+6c=60   <-- you changed - to + here<BR>\n" );
document.write( "3(r-c)=30---->3r-3c=30--> 6r-6c=60   should be this\r<BR>\n" );
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document.write( "Now just use elimination to solve. See here for a video on solving systems of equations. http://collabvsl.wetpaint.com/page/Solving+Systems+of+Equations\r<BR>\n" );
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document.write( "6r + 6c = 90<BR>\n" );
document.write( "6r - 6c = 60<BR>\n" );
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document.write( "12r     = 150<BR>\n" );
document.write( "r = 12.5\r<BR>\n" );
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document.write( "r+c = 15 <BR>\n" );
document.write( "12.5 + c = 15<BR>\n" );
document.write( "c = 2.5\r<BR>\n" );
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document.write( "Does that check out?<BR>\n" );
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