A train passes a station platform in 36 seconds and a man standing on the platform in 23 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?  Answers:  A) 37  B) 240  C) 288  D) 195  E) 211
Speed = (54 * 5/18) m/sec = 15 m/sec. Length of the train = (15 x 23)m = 345 m. Let the length of the platform be x meters. Then, (x + 345)/36 = 15 ==&gt; x + 345 = 540 ==&gt; x = 195 m.Answer: 195
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A train passes a station platform in 36 seconds and a man standing on the platform in 23 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?