IN Common Wealth Games an athlete runs 280 meters in 24 seconds. Hisspeed is ? Choose the correct choice from the following choices:  A) 25 km/hr  B) 42.42 km/hr  C) 30 km/hr  D) 32 km/hr  E) None of these
Explanation :   (280/1000)/(24/3600)=42.42 km/hr   Answer : 42.42 km/hr
<result>B</result>
IN Common Wealth Games an athlete runs 280 meters in 24 seconds. Hisspeed is ?