A.  23 m

B.  23 (2/9) m

C.  27 (7/9) m

D.  29 m

1
Correct Answer :
27 (7/9) m
Explanation :

Relative speed = (40 - 20) km/hr = [ 20 x (5/18) ] m/sec = (50/9) m/sec

=> Length of faster train = [ (50/9) x 5 ] m = (250/9) m = 27 (7/9) m


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