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  1. A thief is noticed by a policeman from a distance of 200m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km./hr and 11 km./hr respectively. What is the distance between them after 6 minutes ?
    1. 100 m
    2. 190 m
    3. 200 m
    4. 150 m
Correct Option: A

Relative speed of police
= 11 – 10 = 1 kmph

=
5
m/sec
18

∴  Distance decreased in 6 minutes =
5
× 6 × 60
18

= 100 m
∴  Distance remained between them = 200–100 = 100 m


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