A.  50 m

B.  100 m

C.  150 m

D.  200 m

1
Correct Answer :
50 m
Explanation :

Let the length of each train be z metres.

Then, distance covered = 2z metres.

Relative speed = (46 - 36) km/hr

= [ 10 x (5/18) ] m/sec

= (25/9) m/sec

=> 2z/36 = 25/9

=> z = 50


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