Question 562297
Freight train	x				330	miles				
Passenger train	x+14	400	miles				
											
330/x=400/(x+14)	
330/x-400(x+14)	
LCD = x(x+14)									=
Multiply by LCD											
330(x+14)-400x=	0			
330x+4620-400*x	=0
-70x+4620=0				
-70x=-4620						
/-70								
x=66	speed of	Freight train						
x+14=>	80	speed of	Passenger train