Question 669152
Train I		70	mph				
Train II		80	mph				
							
They are moving in opposite directions							
so effective speed =		150	mph				
Distance =		210	miles				
							
Time = distance/speed							
Time =		210	/	150			
Time =		1.4	hours				
Time they will be 		210	miles	apart	1	hour 	24 minutes
m.ananth@hotmail.ca