A thief is spotted by a policeman from a distance of 175 meters. 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?
Choose the correct answer
A) 350m  B) 200m  C) 400m  D) 700m  E) None of them
Relative speed of the policeman = (10-8) km/hr =2 km/hr.   Time taken by police man to cover   (175m/1000) x 1/2 hr = 7/80hr.   In 7/80 hrs, the thief covers a distance of 8 x 7/80 km = 7/10 km = 700 m   Answer is 700m.
<result>D</result>
A thief is spotted by a policeman from a distance of 175 meters. 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?