A policeman spotted a criminal from a distance of 200 metres. When the policeman starts the chase, the criminal also starts running. If the criminal was running at 10 km/hr and the policeman was chasing at the speed of 12 km/hr, find the distance the criminal will run before he is catched by the policeman ?
Solution: Relative speed = (12 - 10) = 2 km/hr.
Time taken by policeman to cover 200 m = (200/1000 * 1/2) hr
= 1/10 hr.
In 1/10 hrs, the criminal covers a distance of (10*1/10) km = 1 km.
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