A 180 m long train crosses a man standing on the platform in 6 seconds. What is the speed of the train?

Question

Accepted Answer

#### Step 1: Use the Speed Formula
The formula for speed is:  
$$
	ext{Speed} = \frac{	ext{Distance}}{	ext{Time}}
$$

#### Step 2: Convert Units
- Distance = **180 meters**  
- Time = **6 seconds**  
- Speed in meters per second (m/s):  
$$
	ext{Speed} = \frac{180}{6} = 30 \, 	ext{m/s}.
$$

Convert speed to kilometers per hour (km/h):  
$$
	ext{Speed in km/h} = 	ext{Speed in m/s} 	imes 3.6.
$$  
Substitute:  
$$
30 	imes 3.6 = 108 \, 	ext{km/h}.
$$

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Thus, the speed of the train is **108 km/h**, making Option **(b)** correct.

Answer

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