Question 864846
Freight train	x	km/h						
Passenger	x+	20	km/h					
..								
They are moving away from each other								
								
So add up their speed.								
								
combined speed = x+		1	x	+	20			
(	2	x	+	20	)			
Time =	4	hours						
Distance =   	300	miles						
Distance = speed * time								
(	2	x		20	)*	4	=	300
8.00	x	+	80	=	300			
8	x	=	300	+	-80			
8	x	=	220					
/	8							
x=	27.5	mph						
Freight train	=	27.5	mph					
Passenger	27.5	+	20	=	47.5	mph		
m.ananth@hotmail.ca