document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=176801>Question 176801</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A motorboat travels 648km  in 9  hours going upstream and  588km 6hours going downstream. What is the speed of the boat in still water, and what is the speed of the current? <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #131876 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=131876\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A motorboat travels 648km in 9 hours going upstream and 588km 6hours going downstream. What is the speed of the boat in still water, and what is the speed of the current?<BR>\n" );
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document.write( "Find the speed upstread and downstream:<BR>\n" );
document.write( "648km/9hrs = 72 kph<BR>\n" );
document.write( "588km/6hrs = 98 kph<BR>\n" );
document.write( "The boat speed is the average of the 2 speeds.<BR>\n" );
document.write( "(72+98)/2 = 85 kph<BR>\n" );
document.write( "The stream speed is the difference:<BR>\n" );
document.write( "98-85 = 13 kph<BR>\n" );
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document.write( "Boats don't use kph, they use knots. </SPAN>\n" );
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