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Two trains of same length moving in oppo...

Two trains of same length moving in opposite direction. Speed of train1 is 54 km/hr and Speed of train2 is 18 km/hr. First train takes 30 seconds to cross the second train. Find the time taken by first train to cross 450 m long platform.

A

58sec

B

64 sec

C

60 sec

D

50 sec

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