document.write( "Question 358377: a boat takes 3 hours to go 24 miles upstream.it can go 36 miles downstream in the same time,Find the speed of the current and the speed of the boat in still water if x=the speed of the boat in still water and y=the speed of the current. \n" ); document.write( "
Algebra.Com's Answer #255753 by mananth(16946)\"\" \"About 
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a boat takes 3 hours to go 24 miles upstream.it can go 36 miles downstream in the same time,Find the speed of the current and the speed of the boat in still water if
\n" ); document.write( "x=the speed of the boat in still water
\n" ); document.write( "y=the speed of the current.
\n" ); document.write( "downstream speed = x+y
\n" ); document.write( "upstream speed = x-y
\n" ); document.write( "...
\n" ); document.write( "time downstream = 36/(x+y)=3
\n" ); document.write( "3x+3y=36\r
\n" ); document.write( "\n" ); document.write( "time upstream = 24/(x-y)=3
\n" ); document.write( "3x-3y=24
\n" ); document.write( "add the equations
\n" ); document.write( "6x=60
\n" ); document.write( "/6
\n" ); document.write( "x= 10 mph speed of boat
\n" ); document.write( "...
\n" ); document.write( "plug value of x in equation
\n" ); document.write( "30+3y=36
\n" ); document.write( "3y=36-30
\n" ); document.write( "3y=6
\n" ); document.write( "y=2 mph speed of current
\n" ); document.write( "...
\n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( "
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