Question 584697
Boat  	speed	=x	mph				
current     	speed	=y	mph				
against wind x-y mph		2	hours				
with wind x+y	mph	2	hours				
							
Distance upstream=	16	miles	Downstream = 24	miles
t=d/r	against	current     					
16/(x-y	)=2
2(x-y)	=16
2x-2y	=	16	....................1
							
24/(x+y	)=	2.00
2.00(x	+y)=	24.00
2.00x+	2.00	y	=24.00	...............2
Multiply (1) by	1						
Multiply (2) by	1						
we get							
2	x	+	2	y	=	16	
2	x	+	2	y	=	24	
4	x	=	40				
/	4						
x	=	10.00	mph				
							
plug value of x in (1)							
2.00	x		-2.00	y	=	16.00	
20.00			-2.00	y	=	16.00	
-2.00	y	=	16.00	-20.00			
-2.00	y	=	-4.00				
	y	=	2	mph			
	Boat  	10	mph				
	current     	2	mph