Question 420206
Plane A speed		500	km/h					
Plane B speed		700	km/h					
Distance   		2100	miles					
In 1 hour Plane A has traveled	500 miles before Plane B starts		
So distance = 	1600						
Let time they take to meet be	x	hours					
Time taken to meet is same							
	
t=d/r								
combined speed=		1200	mph					
								
1200	x	=	1600					
x=   	1.33	hours	

They will meet at 2:33 pm