Question
A train travelling with a speed of 72 km/h can cross a
pole in 8 seconds. Find the time taken by the train to cross a 200 metres long platform if the speed of train is increased by 20%.Solution
Speed of train = 72 × 5/18 = 20 m/s Length of train = 20 × 8 = 160 metres Desired time = (200 + 160)/(1.20 × 20) = 15 seconds
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