A person crosses a 500 m long street in 5 minutes. What is his speed in km/h?
Answer & explanation
Correct answer: option 3
5 minutes = 5 × 60 sec = 300 sec
Speed = \(\frac{Distance }{Speed }\)
= \(\frac{500}{300}\) = \(\frac{5}{3}\) m/sec
\(\frac{5}{3}\) m/sec = \(\frac{5}{3}\) × \(\frac{18}{5}\) km/h
= 6 km/h