document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=800365>Question 800365</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A small boat traveled upstream on a river at 10km/h and return downstream at 14km/h. if the round trip took 6 hours in all, how far upstream did the boat travel? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #483238 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=483238\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A small boat traveled upstream on a river at 10km/h and return downstream at 14km/h.<BR>\n" );
document.write( " if the round trip took 6 hours in all, how far upstream did the boat travel?<BR>\n" );
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document.write( "Let d = dist up stream (and dist downsteam)<BR>\n" );
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document.write( "Write a time equation; time = dist/speed<BR>\n" );
document.write( "time up + time down = 6 hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F10 ALIGN=MIDDLE  ALT=\"d%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F14 ALIGN=MIDDLE  ALT=\"d%2F14\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 6<BR>\n" );
document.write( "multiply by the least common multiple which is 70<BR>\n" );
document.write( "70*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F10 ALIGN=MIDDLE  ALT=\"d%2F10\"   DISABLED_style= \"max-width:90%; height:auto;\" > + 70*<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%2F14 ALIGN=MIDDLE  ALT=\"d%2F14\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 70(6)<BR>\n" );
document.write( "Cancel the denominators and you have:<BR>\n" );
document.write( "7d + 5d = 420<BR>\n" );
document.write( "12d = 420<BR>\n" );
document.write( "d = 420/12<BR>\n" );
document.write( "d = 35 km up the river<BR>\n" );
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document.write( "Confirm this solution, find the time each way<BR>\n" );
document.write( "35/10 = 3.5 hrs<BR>\n" );
document.write( "35/14 = 2.5 hrs<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "total time: 6 hrs\r<BR>\n" );
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document.write( " </SPAN>\n" );
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