- A200
- B150
- C180
- D120
Step-by-Step Solution
Speed = 72 km/h = 20 m/s; distance in 20 s = 400 m; train length = 400 − 250 = 150 m.
Answer: B) 150
A train running at 72 km/h crosses a platform 250 m long in 20 seconds. What is the length of the train in metres?
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