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Let the length of the platform be P meters. 90 km/h = 90 ÷ 18/5 = 25 m/sec Hence, the length of the train = 25 × 18 = 450 meters. According to the question, 25 × 55 = (450 + P) 1375 = 450 + P P= 925 The length of the platform is 925 m.
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