A train 200~\text{m} long passes a platform 100~\text{m} long in 10~\text{seconds}. What is the speed of the train?
- A. 40~\text{m/s}
- B. 30~\text{m/s} ✓
- C. 25~\text{m/s}
- D. 20~\text{m/s}
Correct Answer: B. 30~\text{m/s}
Explanation
The total distance covered to cross the platform is Length of train + Length of platform = 200 + 100 = 300~\text{m}. Speed = \frac{\text{Distance}}{\text{Time}} = \frac{300}{10} = 30~\text{m/s}.
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