A runner runs a 750-metre race in 54 seconds. Find the runner’s speed (in km/h).
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 50.
Given that
A runner runs a 750-metre race in 54 seconds
Formula used
Speed = Distance/Time
Calculation
⇒The runner’s speed = 750/54 = (750/54) × 18/5 = 50 km/h