Question
A train that is 210.5 metres long is moving at a speed of
60 km/h. It crosses a platform in 42 seconds. What is the length of the platform?Solution
ATQ,
Let the length of the platform be ‘x’ metres
Speed of the train = 60 × (5/18) = 16.67 m/s
ATQ,
(x + 210.5) = 16.67 × 42
Or, (x + 210.5) = 700
Or, x = 700 - 210.5
Or, x = 489.5
Therefore, the length of the platform = 489.5 metres
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