A person crosses a 700 m long street in 5 minutes. What is his speed in km per hour?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 8.4 km/h
Distance = 700 m = 0.7 km
Time = 5 minutes = 5/60 hours
Speed = Distance/Time = 0.7 ÷ (5/60) = 0.7 × 60/5 = 8.4 km/h
Therefore, the speed is 8.4 km/h.