document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=847758>Question 847758</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat traveled downstream a distance of 36 mi and then came right back. If the speed of the current was 6 mph and the total trip took 4 hours and 30 minutes, find the average speed of the boat relative to the water. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #510675 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=510675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The current adds to the speed going <BR>\n" );
document.write( "downstream, and subtracts from the speed <BR>\n" );
document.write( "going upstream, so the effect of the <BR>\n" );
document.write( "current cancels to zero<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "The total distance is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+36+%2B+36+=+72+ ALIGN=MIDDLE  ALT=\"+36+%2B+36+=+72+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = the average speed of the<BR>\n" );
document.write( "boat relative to the water<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+72+=+s%2A4.5+ ALIGN=MIDDLE  ALT=\"+72+=+s%2A4.5+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+16+ ALIGN=MIDDLE  ALT=\"+s+=+16+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/hr<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );