Question 839510
boat	speed	x	mph				
current     	speed	2	mph				
							
against	current     	x	-	2	mph		
with	current     	x   	+	2	mph		
							
Distance against	current     	6					
Distance with	current     	10					
Time = same	equate the time against with time with current						
t=d/r							
6	/(x-	2	)=	10	/(x+	2	)
6	*(x+	2	)=	10	*(x-	2	)
6	x  	+	12	=	10	x	-20
6	x  	-10	x   	=	-20	+	-12
-4	x  	=	-32				
/	-4						
	x=	8	mph				
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