A policeman is 150 m behind a thief. The thief runs at 8 km/h and the policeman chases him at 10 km/h. How far will the thief have run before he is caught?
A. 500 m
B. 600 m
C. 450 m
D. 750 m
A. 500 m
B. 600 m
C. 450 m
D. 750 m
Best answer
Answer: B. 600 m
Answer: (B) 600 m
The gap closes at 2 km/h. Time = 0.15 ÷ 2 = 0.075 h.
Thief's distance = 8 × 0.075 = 0.6 km = 600 m.
Shortcut: distances run are in the ratio of speeds 8 : 10, so the thief runs 150 × 8/2 = 600 m.
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