A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the speed of 10 km/h and 11 km/h respectively. What is the distance between them after 6 minutes?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 100 m
Both run the same way, so the policeman closes the gap at the difference of their speeds (relative speed).
Relative speed \(=11-10=1\) km/h \(=1000\) m per hour
6 minutes \(=\frac{1}{10}\) hour, so the gap closes by \(1000\times\frac{1}{10}=100\) m
Distance left \(=200-100=\) 100 m