Question 871925
rowing boat	speed	x	mph	with no	current     		
current     	speed	2	mph				
							
against	current     	x	-	2	mph		
with	current     	x   	+	2	mph		
							
Distance against	current     	12					
Distance with	current     	16					
Time = same	equate the time against with time with current						
t=d/r							
12	/(x-	2	)=	16	/(x+	2	)
12	*(x+	2	)=	16	*(x-	2	)
12	x  	+	24	=	16	x	-32
12	x  	-16	x   	=	-32	+	-24
-4	x  	=	-56				
/	-4						
	x=	14	mph