Question
The speed of a train is 36 km/hr and it takes 12 seconds
to cross a man. Find the time taken by train to cross a platform if the ratio of the length of the platform to the train length is 5:3.Solution
Let the length of train be x m. According to the question, => 36 x (5/18) = x/12 => x = 120 m Length of the platform = 120 x (5/3) = 200 m Required time = (120 + 200)/10 = 32 seconds
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