document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1059311>Question 1059311</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In still&#8203; water, a boat averages 18 miles per hour. It takes the same amount of<BR>\n" );
document.write( "time to travel 16 miles &#8203;downstream, with the&#8203; current, as it does 8 miles&#8203; upstream, <BR>\n" );
document.write( "against the current. What is the rate of the&#8203; water's current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #674366 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=674366\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+ ALIGN=MIDDLE  ALT=\"+c+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the rate of the current in hrs<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the time in hrs to go either<BR>\n" );
document.write( "downstream or upstream<BR>\n" );
document.write( "--------------------------------------<BR>\n" );
document.write( "Going downstream:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+16+=+%28+18+%2B+c+%29%2At+ ALIGN=MIDDLE  ALT=\"+16+=+%28+18+%2B+c+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Going upstream:<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8+=+%28+18+-+c+%29%2At+ ALIGN=MIDDLE  ALT=\"+8+=+%28+18+-+c+%29%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+16+%2F+%28+18+%2B+c+%29+ ALIGN=MIDDLE  ALT=\"+t+=+16+%2F+%28+18+%2B+c+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Plug (1) into (2)<BR>\n" );
document.write( "------------------------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8+=+%28+18+-+c+%29%2A%28+16+%2F+%28+18+%2B+c+%29+%29+ ALIGN=MIDDLE  ALT=\"+8+=+%28+18+-+c+%29%2A%28+16+%2F+%28+18+%2B+c+%29+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+8%2A%28+18+%2B+c+%29+=+16%2A%28+18+-+c+%29+ ALIGN=MIDDLE  ALT=\"+8%2A%28+18+%2B+c+%29+=+16%2A%28+18+-+c+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+144+%2B+8c+=+288+-+16c+ ALIGN=MIDDLE  ALT=\"+144+%2B+8c+=+288+-+16c+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+24c+=+144+ ALIGN=MIDDLE  ALT=\"+24c+=+144+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+6+ ALIGN=MIDDLE  ALT=\"+c+=+6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "The rate of the current is 6 mi/hr\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );