Home » Aptitude » Speed, Time and Distance » Question
  1. A policeman goes after a thief who has 100 metres start, if the policeman runs a kilometre in 8 min, and the thief a km in 10 min, the distance covered by thief before he is over-powered is
    1. 350 m
    2. 400 m
    3. 320 m
    4. 420 m
Correct Option: B

Relative speed =
1000
1000
810

=
5000 − 4000
=
1000
m/minute
4040

∴  Required time =
100
1000
40

=
4000
= 4 m/minute
1000

∴   Distance covered by the thief =
1000
× 4
10

= 400 metres


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