document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=841735>Question 841735</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mark can row upstream at 5mph and downstream at 11 mph if mark starts rowing upstream until he gets tired and then rows downstream to his starting point how far did he row if the entire trip took 4 hrs<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 #507167 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=507167\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Mark can row upstream at 5mph and downstream at 11 mph if mark starts rowing upstream until he gets tired and then rows downstream to his starting point how far did he row if the entire trip took 4 hrs<BR>\n" );
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document.write( "let x=travel time upstream<BR>\n" );
document.write( "4-x=travel time downstream<BR>\n" );
document.write( "distance=travel time*speed<BR>\n" );
document.write( "5x=11(4-x)<BR>\n" );
document.write( "5x=44-11x<BR>\n" );
document.write( "16x=44<BR>\n" );
document.write( "x=44/16=11/4<BR>\n" );
document.write( "4-x=16/4-11/4=5/4<BR>\n" );
document.write( "5*11/4=55/4(distance upstream)<BR>\n" );
document.write( "11*5/4=55/4(distance downstream)<BR>\n" );
document.write( "2*55/4=55/2=27.5<BR>\n" );
document.write( "how far did he row? 27.5 miles<BR>\n" );
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