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A train, 500 m long passes a standing train in 20 s moving at a speed of 100 km/h. Find the length of the standing train ?
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- 50.55 m
- 55.56 m
- 45.65 m
- None of the above
Correct Option: B
Let x be the length of the standing train
∴ Speed of the train = (500 + x)/20
⇒ 100 x (5/18) = (500 + x)/20
⇒ 500 + x = (100 x 5 x 20)/18
⇒ 500 + x = 555.56
∴ x = 555.56 - 500 = 55.56 m
