A policeman starts chasing a thief when he was already 600 m ahead. If the policeman is running at a speed of 9 km/h and the thief at 8 km/h, then the thief would be caught at a distance of:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 5.4 km.
When two persons are running in same direction, their relative speed is equal to the difference between their individual speeds.
Relative speed of policeman and thief = 9 - 8 = 1 km/h
Time taken by policeman to catch the thief = 0.6/1 = 0.6 hours
Distance covered by thief in 0.6 hours = 0.6 × 9 = 5.4 km