A thief is spotted by a policeman from a distance of 100 metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 8km/hr and that of the policeman 10 km/hr, how far the thief will have run before he is overtaken?	Select the correct option
A) 100 m B) 200 m C) 400 m D) 500 m E) 300 m
Relative speed of the policeman = (10-8) km/hr =2 km/hr.   Time taken by police man to cover 100m   100/1000 x 1/2 hr = 1/20 hr.   In 1/20 hrs, the thief covers a distance of 8x 1/20km =2/5km = 400 m   ANSWER 400 m
<result>C</result>
A thief is spotted by a policeman from a distance of 100 metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 8km/hr and that of the policeman 10 km/hr, how far the thief will have run before he is overtaken?