A runner runs 300 metres race in 36 seconds. The runner’s speed in km/h is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 30.
Speed of runner = 300/36 = 25/3 m/sec
Speed in km/h = Speed in m/sec × 18/5
⇒ (25/3) × (18/5) = 30 km/hr