Question 421784
Train A speed	100	mph		
Train B speed	110	mph		
				
Train A passes station at 	06:10		
Train B passes station at		06:22		
				
Difference in time=		00:12		
Train A will have covered 20	miles	before Train B starts
				
catch up distance=	20	miles	
catch up speed =		110-100	mph
catch up speed =		10	mph	
				
Catchup time = catchup distance/catch up speed				
catch up time=		20/10
catch up time=		2	hours	
catch up time=		8:22 am