Question 503269
Plane I	x 	mph						
Plane II	x+	45						
..								
They are moving towards each other								They are moving towards each other
								
So add up their speed.								
								
combined speed = x+	x	+	45			
(	2	x	+	45	) 			
Time = 	3	hours						
Distance =   	2385	miles						
Distance = speed * time								
(	2	x		45	)*	3	=	2385
6	x 	+	135	=	2385			
6	x 	=	2385	+	-135			
6	x 	=	2250					
/	6							
x=	375	mph	Plane I					
Plane II	375	+	45	=	420	mph