A thief is spotted by a policeman from a distance of 300metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 16km/hr and that of the policeman 20km/hr, how far the thief will have run before he is overtaken ? Choose the most appropriate option.
A) A)1km
B) B)500m
C) C)650m
D) D)750m
E) E)1200m
Relative speed of the policeman = 20-16= 
<gadget id="calculator">20-16</gadget>
<output>4</output>
4 km/hr   time taken by policeman to cover 300m= (300/1000)*(1/4) = 3/40 hr   In 3/40 hr the thief covers a distance of 48/40 km = 6/5 km = 1200m   Answer is 1200m
<result>E</result>
A thief is spotted by a policeman from a distance of 300metres. When the policeman starts the chase, the thief also starts running. If the speed of the thief be 16km/hr and that of the policeman 20km/hr, how far the thief will have run before he is overtaken ?