A policeman saw a thief from distance of 300m and started running towards him. If speed of policeman and thief are 15 km/hr and 12 km/hr respectively, the distance covered by thief before he is being caught is:
Answer & explanation
Correct answer: option 2
P T
Ι------------------Ι---------------Ι
300 m
Speed (T) = 12km/h
Speed (P) = 15km/h
Relative speed = (15 - 12) km/h = 3km/h = 3 × \(\frac{5}{18}\) m/sec
Now,
Time = \(\frac{300}{{3} × \frac{5}{18}} \) = 360 sec
Distance (T) = 12 × \(\frac{5}{18}\) × 360 = 1200 m = 1.2 km