- A20
- B18
- C22
- D25
Step-by-Step Solution
Distance = 180 + 220 = 400 m. Speed = 72 km/h = 20 m/s. Time = 400 ÷ 20 = 20 seconds.
Answer: A) 20
A train 180 m long is running at a speed of 72 km/h. How long will it take to cross a platform 220 m long? (answer in seconds)
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