Two trains X and Y have speeds of 43 km/h and 43 km/h respectively. Train X crosses a man standing in train Y in 27 seconds while moving in the opposite direction. Find the length of train X.

420 m
480 m
360 m
540 m

Correct answer: 540 m

Solution

Since the trains move in opposite directions, relative speed = 43 + 43 = 86 km/h = 23.89 m/s. Length of train X = relative speed × time = 23.89 × 27 ≈ 645 m, which does not match the options, so the intended question likely has a missing/incorrect speed value in OCR. Based on the provided answer key, the correct option is 540 m.

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