Question 417305
Train A speed	60	mph						
Train B speed	64	mph						
								
Train A passes station at 03:10						
Train B passes station at 03:40						
								
Difference in time=	00:30					
Train A will have covered 30 miles before Train B starts		
catch up distance= 30	miles					
catch up speed =	64-60	mph				
catch up speed =	4 mph					
								
Catchup time = catchup distance/catch up speed								
catch up time=30	/4				
catch up time= 	7.5 hours