A thief running at 8 km/hr is chased by a policeman whose speed is 10 km/hr. if the thief is 100 m ahead of the policeman, then the time required for the policeman to catch the thief will be
The relative speed between police and thief = 10-8 = 2 km/h = 10/18 m/s
Distance between police and thief = 100 m
Time = Distance/Speed = 180 s = 3 min
The correct option is B.