Question
A train crosses a pole and a platform of length 300
metres in 5 seconds and 20 seconds, respectively. Find the length of train.Solution
Let the speed of train be 'v' m/s.
Length of train = '5v' metres
So, (5v + 300) ÷ 20 = 'v'
Or, 5v + 300 = 20v
Or, 15v = 300
So, 'v' = 20
Therefore, length of the train = 5 × 20 = 100 metres
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