Question 499518
Freight train	30	mph								
Passenger train	55	mph								
Freight train		02:00								
Passenger train		07:00								
Difference in time=		05:00	=>	5	hours					
Freight train	will have covered 150	miles	before 	Passenger train		starts	from frisco		
catch up distance=		150	miles							
catch up speed =		55	-30	mph						
catch up speed =		25	mph							
Catchup time = catchup distance/catch up speed										
catch up time=		150	/	25						
catch up time=		6	hours		

 trains will be 11*30= 330 km