What Should be Person Speed? If

A person covers a certain distance with a speed of 24 km/hr. in 8 minutes. If he wants to cover the same distance in 6 minutes, what should be his speed:

  1. 28 km/hr
  2. 32 km/hr
  3. 34 km/hr
  4. 36 km/hr
Desire Adnan Default Asked on 4th August 2015 in Maths.
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  • 1 Answer(s)

    Answer: (2) 32 km/hr.
    Explanation:-
    The speed of a person = 24 km/hr
    Speed in m/sec = 24 x 5/18
    = 4 x 5/3
    = 20/3  m/sec

    The speed covered by a person  in  8 min = 20 x 8 /3
    = 160/3  m

    If he want to covered the same distance in 6 min.
    Then, the speed of the person = 160/3 x 6
    = 160/18 m/sec
    Speed in  km/hr. = 160 x 18/18 x 5
    = 160/5
    = 32 km/hr.
    Hence, the answer is (2) 32 km/hr.

    Anurag Mishra Professor Answered on 4th August 2015.
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