A train passes a pole in 15 seconds and a platform 100 m long in 25 seconds. Then find the length of the train.
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200 m 150m 50 m data inadequate |
150m |
Speed = \(\frac{ Distance}{ Time}\) Let the length of the train be x According to the question, Speed = \(\frac{x }{ 15}\) ------1st equation Speed = \(\frac{\text{x + 100} }{ 25}\) --------2nd equation Therefore, we can say that: \(\frac{x }{ 15}\) = \(\frac{\text{x + 100} }{ 25}\) 25x = 15x + 1500 10x = 1500 x = 150 So, the length of train is 150 m |