A policeman spots a thief from a distance of 100 metres. When he starts running after the thief, the thief starts running as well. How far will the thief have to run before being overtaken if his speed is 8 km/h and the policeman's speed is 10 km/h?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 400 metres.
Distance between the thief and the policeman = 100 m
Relative speed = 10 - 8 = 2 km/hr
⇒ 2 × = m/sec
Time = = 180 sec
Distance = 8 × × 180 = 400 meters