document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206933>Question 1206933</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The barges traveled downstream at 12 mph and upstream at 7 mph. What was their downstream travel time if it was 10 hours less than the time required to travel the same distance upstream? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #844670 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13215)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=844670\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Here is a different way to start on solving the problem that leads quickly to the same equation shown in the solutions by the other tutors.<br><BR>\n" );
document.write( "Let x be the downstream travel time; then x+10 is the upstream travel time.<br><BR>\n" );
document.write( "The ratio of the speeds is 7:12; since the distances are the same, the times are in the same ratio:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7%2F12=x%2F%28x%2B10%29 ALIGN=MIDDLE  ALT=\"7%2F12=x%2F%28x%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12x=7%28x%2B10%29 ALIGN=MIDDLE  ALT=\"12x=7%28x%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12x=7x%2B70 ALIGN=MIDDLE  ALT=\"12x=7x%2B70\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x=70 ALIGN=MIDDLE  ALT=\"5x=70\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=14 ALIGN=MIDDLE  ALT=\"x=14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: 14 hours<br><BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "downstream x=14 hours at 12mph = 14*12 = 168 miles<BR>\n" );
document.write( "upstream x+10=24 hours at 7mph = 24*7 = 168 miles<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );