Question

Train A running at a speed of 46 km/hr. crosses train B in 30 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is 500 meters and both trains running in the opposite direction.

A 22 km/hr.
B 14 km/hr.
C 18 km/hr.
D 68 km/hr.
E 35 km/hr.
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