document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=362933>Question 362933</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The river boat Delta Duchess paddled upstream at 12 km/h, stopped for 2 h of sightseeing, and paddled back at 18 km/h. How far upstream did the boat travel if the total time for the trip, including the stop, was 7 h? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #258864 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=258864\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The river boat Delta Duchess paddled upstream at 12 km/h, stopped for 2 h of<BR>\n" );
document.write( " sightseeing, and paddled back at 18 km/h.<BR>\n" );
document.write( " How far upstream did the boat travel if the total time for the trip, including the stop, was 7 h?<BR>\n" );
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document.write( "We are only interested the in the actual travel time which is 5 hrs<BR>\n" );
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document.write( "Let d = distance traveled upstream (also return distance downstream)<BR>\n" );
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document.write( "Write a time equation; time = dist/speed<BR>\n" );
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document.write( "time up + time back = 5 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F12 ALIGN=MIDDLE  ALT=\"d%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F18 ALIGN=MIDDLE  ALT=\"d%2F18\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 5<BR>\n" );
document.write( "Multiply by 36 to clear the denominators, results:<BR>\n" );
document.write( "3d + 2d = 36(5)<BR>\n" );
document.write( "5d = 180<BR>\n" );
document.write( "d = 36 miles upstream <BR>\n" );
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document.write( "Check solution by finding the time for each way<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36%2F12 ALIGN=MIDDLE  ALT=\"36%2F12\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36%2F18 ALIGN=MIDDLE  ALT=\"36%2F18\"   DISABLED_style= \"max-width:90%; height:auto;\" > =<BR>\n" );
document.write( "3 + 2 = 5 hrs  </SPAN>\n" );
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