- A270
- B450
- C1440
- D225
Step-by-Step Solution
54 km/h = 15 m/s; in 30 s the train covers 450 m = train + platform, so the platform = 450 - 180 = 270 m.
Answer: A) 270
Running at 54 km/h, a 180 m long express clears a station platform completely in 30 seconds. How long is the platform, in metres?
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