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A train running at 54 km/hr crosses a telegraph pole in 18 seconds less time than it takes to cross a platform. Find the length of the platform.
Speed is 54×5/18 = 15 m/s.
Let the time required for crossing the pole be t.
Length of the train is 15×t.
Length of the train + length of the platform = 15 × (t + 18).
So length of the platform = 15 × (t + 18) – 15 × t = 15 × 18 = 270 m.
Hence, option 3 is the correct answer.
By: Amit Kumar ProfileResourcesReport error
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