- A32 s
- B48 s
- C18.7 s
- D13.3 s
Step-by-Step Solution
Relative speed km/h m/s, so the train is m long. Bridge: s. (48 s wrongly uses the relative speed for the bridge.)
Answer: A) 32 s
A train at 54 km/h passes a jogger running the same way at 18 km/h in 20 seconds. How long will the same train take to cross a 280 m bridge?
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