Correct Answer: Option A
Let the length of each train be x metres.
Then, distance covered = 2x metres.
Relative speed = (46 - 36) km/hr
= 10 x (5/18) m/sec.
= (25/9) m/sec.
=> 2x/36 = 25/9
=>2x = 100
So, x = 50.
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