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If a man riding his bicycle covers 150 meters in 25 seconds then what is his speed in km / hour?
1. 25
2. 23
3. 21.6
4. 20

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Correct Answer - Option 3 : 21.6

Given:

Distance covered = 150 meters

Time = 25 seconds

Formula used:

Speed = Distance/Time

Calculation:

Speed = 150/25 m/s

⇒ 6 m/s = 6 × (18/5) km/hr

⇒ 108/5 km/hr 

⇒ 21.6 km/hr

∴ The speed in km/hr is 21.6 km/hr

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