A train running at 54km/hr crosses a telegraph post in 16sec and a platform in 40 sec. Find the length of the platform?
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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. = 15 × (t + 18). So length of the platform = 15 × (t + 18) – 15 × t = 15 × 18 = 270 m.
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