A thief noticed a policeman at a distance of 600 metres. The thief started running and the policeman chased him. The thief and policeman are running at speeds of 12 km/h and 15 km/h, respectively. Find the time (in minutes) required for the policeman to catch the thief.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 12.
Thief's speed = 12 km/hr
Policeman's speed = 15 km/hr
The relative speed of the policeman with respect to the thief
Relative speed = Policemen's speed - Thief's speed
The time taken to cover the initial distance of 600 meters
Time = Distance/Speed
⇒
⇒ 720 sec or 12 minutes
Therefore, the time required for the policeman to catch the thief is 12 minutes.