A thief takes off on his bike at a certain speed, after seeing a police car at a distance of 250 m. The police car starts chasin the thief and catches him. If the thief runs 1.5 km before being caught and the speed of the police car is 70 km/h, then what is the speed of thief’s bike (in km/h)?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 60.
The initial distance between the thief and the police = 250 m = 0.25 km
The thief runs 1.5 km before being caught.
So, the police car covers = 1.5 + 0.25 = 1.75 km
The speed of the police car = 70 km/h
Time taken by the police = 1.75/70 = 0.025 hours
Thief's speed = 1.5/0.025 = 60 km/h
So, the speed of the thief's bike is 60 km/h.