Problems on Trains · Question 24 · Medium
A train 300 m long passes a pole in 15 seconds. If its speed is increased by 18 km/h, how long will it take to cross a 300 m long platform?
- 20 seconds
- 30 seconds
- 25 seconds
- 24 seconds
Answer and explanation
Answer: D. 24 seconds
Explanation: Original speed = 20 m/s; 18 km/h = 5 m/s, so the new speed is 25 m/s. Crossing the platform means covering 600 m: 600 ÷ 25 = 24 seconds.
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