Subject: General Aptitude · Chapter: Time and Distance · Exam: 2016 · Marks: · Difficulty:
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/hr and 11 km/hr respectively. What is the distance between them after 6 minutes?
(a)100m
(b)120m
(c)150m
(d)160m
Answer
Answer (as printed): A
Explanation
Speed of thief = 10 km/hr Speed of policeman = 11 km/hr Relative speed of policeman with respect to thief = (11-10) km/hr = 1 km/hr Thief is noticed by a policeman from a distance of 200m Distance covered in 6 minutes $\frac{1000}{60} \times 6=100 \mathrm{m}$ Distance between them after 6 minutes $$=200-100=100 \mathrm{m}$$