An athlete runs 200 metres race in 24 seconds. His speed is :	Choose the correct option
A) 20 km/hr B) 24 km/hr C) 28.5 km/hr D) 30 km/hr E) None of these
Speed = 200/24 m/sec=25/3 m/sec=(25/3*18/5)km/hr=30 km/hr.   Correct Option: 30 km/hr
<result>D</result>
An athlete runs 200 metres race in 24 seconds. His speed is :