Question

A train 100 m long is running at speed of 18 km/h. In what time will it pass a man standing on the platform?
1. 41 s
2. 20 s
3. 25 s
4. 30 s

Answer 1

Correct Answer - Option 2 : 20 s

Given:

Length of train = 100 m

Speed of train = 18 km/hr = 18 × (5/18) m/s

⇒ 5 m/s

Formula used:

Time taken = Distance/Speed

Calculation:

Time taken to cross a man = 100/5 seconds

⇒ 20 seconds

∴ The required time taken is 20 seconds