document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=385891>Question 385891</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat'screw rowed 20 miles downstream, with the current, in 2 hours. The return upstream, against the current, covered the same distance, but took 5 hours. Find the crew's rowing rate in still water and the rate of the current.<BR>\n" );
document.write( "The crew's rowing rate is still water is ____ mile(s) per hour.<BR>\n" );
document.write( "The rate of the current is ____ mile(s) per hour. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #272900 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=272900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A boat'screw rowed 20 miles downstream, with the current, in 2 hours. The return upstream, against the current, covered the same distance, but took 5 hours. Find the crew's rowing rate in still water and the rate of the current.<BR>\n" );
document.write( "The crew's rowing rate is still water is ____ mile(s) per hour.<BR>\n" );
document.write( "The rate of the current is ____ mile(s) per hour.<BR>\n" );
document.write( "...<BR>\n" );
document.write( "boat rate in still water = x<BR>\n" );
document.write( "current rate = y<BR>\n" );
document.write( "...<BR>\n" );
document.write( "Rate<BR>\n" );
document.write( "upstream = x-y<BR>\n" );
document.write( "downstream = x+y<BR>\n" );
document.write( "..<BR>\n" );
document.write( "time downstream = time upstream<BR>\n" );
document.write( "...<BR>\n" );
document.write( "t=d/r<BR>\n" );
document.write( "20/(x+y)=2<BR>\n" );
document.write( "multiply by (x+y)<BR>\n" );
document.write( "20=2(x+y)<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "10=x+y<BR>\n" );
document.write( "x+y=10.................1<BR>\n" );
document.write( "..<BR>\n" );
document.write( "20/(x-y)=5<BR>\n" );
document.write( "20=5(x-y)<BR>\n" );
document.write( "/5<BR>\n" );
document.write( "4=x-y<BR>\n" );
document.write( "x-y =4..................2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "add 1 & 2<BR>\n" );
document.write( "2x=14<BR>\n" );
document.write( "/2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28x=7%29%29 ALIGN=MIDDLE  ALT=\"%28highlight%28x=7%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph boat rate in still water.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28y=3%29%29 ALIGN=MIDDLE  ALT=\"%28highlight%28y=3%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > mph rate of current<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca\r<BR>\n" );
document.write( "\n" );
document.write( "...<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );