Question
A train traveling at a speed of 72 km/h takes 15 seconds
to cross a pole. If the same train crosses a platform in 40 seconds, find the length of the platform.Solution
Speed = 72 km/h = 20 m/s. Length of train = 20 × 15 = 300 m. Length of platform = 20 × 40 - 300 = 500 m. Correct option: d
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