If a man crosses a 700 m long street in 5 minutes. What is his speed? Choose the correct answer:  A) 7 km/hr  B) 7.1 km/hr  C) 7.2 km/hr  D) 8 km/hr  E) 8.4 km/hr
distance = 700 meter   time = 5 minutes = 5 x 60 seconds = 300 seconds   Speed = distance/time=700/300=2.3m/s=2.3×18/5 km/hr=8.4 km/hr   8.4 km/hr
<result>E</result>
If a man crosses a 700 m long street in 5 minutes. What is his speed?