A thief running at 8 km/h is chased by a policeman whose

Home » Aptitude » Speed, Time and Distance » Question

A thief running at 8 km/h is chased by a policeman whose speed is 10 km/h. If the thief is 100 m ahead of the policeman, then the time required for the policeman to catch the thief will be

1. 2 min
2. 3 min
3. 4 min
4. 6 min

Correct Option: B

Relative speed of policeman with thief = (10 - 8) = 2 km/h
Now, time taken to cover 100 m with speed of 2 km/h or 2000 m/h

Now, Speed = Distance / Time
∴ Time = D/S = 100/2000
= 1/20 h or 60/20 min = 3 min