# What is his speed in km per hour?

A man riding his bicycle covers 150 metres in 25 seconds. What is his speed in km per hour?

- 20 km/hr
- 21.6 km/hr
- 23 km/hr
- 25 km/hr

**Answer: (2) 21.6 km/hr**

**Explanation:-**

Total distance covered by a man = 150 meters

Time taken by a man to covered distance 150 meters = 25 sec

Speed of the bicycle = 150/25 = 6 m/sec

Speed km/hr = 6 x 18/5

= 108/5

= 21.6 km/hr

Hence, the answer is (2) 21.6 km/hr.