A thief is spotted by a policeman from a distance of 200metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 18km/hr and that of the policeman 22km/hr, how far the thief will have run before he is overtaken ?
Choices.
A) A)900m  B) B)500m  C) C)650m  D) D)750m  E) E)800m
Relative speed of the policeman = 22-18= 
<gadget id="calculator">22-18</gadget>
<output>4</output>
4 km/hr   time taken by policeman to cover 200m= (200/1000)*(1/4) = 1/20 hr   In 1/20 hr the thief covers a distance of 18/20 km = 9/10 km = 900m   900mnswer is 900m
<result>A</result>
A thief is spotted by a policeman from a distance of 200metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 18km/hr and that of the policeman 22km/hr, how far the thief will have run before he is overtaken ?