document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1160536>Question 1160536</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A motorboat can maintain a constant speed of 18 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 44 minutes; the return trip takes 28 minutes. What is the speed of the current? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #783846 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=783846\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> current speed=c<BR>\n" );
document.write( "upstream speed is 18-c mph<BR>\n" );
document.write( "and  in 44 minutes, the boat goes (44/60)(18-c) miles<BR>\n" );
document.write( "downstream it goes 18+c mph and in 28 minutes goes (28/60)(18+c) miles<BR>\n" );
document.write( "Those are equal <BR>\n" );
document.write( "the 60s cancel out<BR>\n" );
document.write( "so 44(18-c)=28(18+c)<BR>\n" );
document.write( "792-44c=504+28c<BR>\n" );
document.write( "288=72c<BR>\n" );
document.write( "c=4 mph\r<BR>\n" );
document.write( "\n" );
document.write( "upstream 14 mph net and goes 14*44/60 miles or 10.267 miles<BR>\n" );
document.write( "downstream 22 mph and goes 22*28/60 miles or 10.267 miles </SPAN>\n" );
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