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Question

Aruna is aboard train A, which is moving at a speed of 50 km/h. Another train, train B, travels in the opposite direction at 58 km/h and has a length three times that of train
A. When train B passes Aruna in just 15 seconds, we are asked to determine the length of train
A. (in metres).

A 150

B 130

C 112.5

D 180

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