document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=941244>Question 941244</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a boat which moves 36mph in still water travels 28 miles downstream in the same amount of time that it takes to travel 20 miles up stream. find the speed of the curren </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #573750 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=573750\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a boat which moves 36mph in still water travels 28 miles downstream in the same amount of time that it takes to travel 20 miles up stream. find the speed of the current.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "let c=speed of current<BR>\n" );
document.write( "36+c=speed of boat downstream<BR>\n" );
document.write( "36-c=speed of boat upstream<BR>\n" );
document.write( "travel time=distance/speed(same for both directions)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=28%2F%2836%2Bc%29=20%2F%2836-c%29 ALIGN=MIDDLE  ALT=\"28%2F%2836%2Bc%29=20%2F%2836-c%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "28(36-c)=20(36+c)<BR>\n" );
document.write( "1008-28c=720+20c<BR>\n" );
document.write( "48c=288<BR>\n" );
document.write( "c=6<BR>\n" );
document.write( "speed of the current=6 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );