Home » Aptitude » Speed, Time and Distance » Question
  1. In a kilometre race, A beats B by 30 seconds and B beats C by 15 seconds. If A beats C by 180 metres, the time taken by A to run 1 kilometre is
    1. 250 seconds
    2. 205 seconds
    3. 200 seconds
    4. 210 seconds
Correct Option: B

A beats B by 30 seconds and B beats C by 15 seconds.
Clearly, A beats C by 45 seconds.
Also, A beats C by 180 metres.
Hence, C covers 180 metres in 45 seconds.

∴  Speed of C =
180
= 4 m/sec
45

∴  Time taken by C to cover 1000 m
=
1000
= 250 sec.
4

∴  Time taken by A to cover 1000 m
= 250–45 = 205 sec.


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