How Many Peacocks are There ? If

There are deer and peacocks in a zoo. By counting heads they are 80. The number of their legs is 200. How many peacocks are there?

  1. 30
  2. 50
  3. 60
  4. 20
Harsh Vardhan Professor Asked on 18th August 2015 in Reasoning Questions.
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  • 1 Answer(s)

    Answer: (3) 60

    Explanation:-
    Let the number of beers be X  & the number of peacocks is Y.

    The total number of heads = 80
    The, X + Y = 80           …………………. (1)

    The total number of their legs = 200
    Then,  4 X + 2 Y = 200
    Both sides are divide by 2 ,
    Then, 2 X + Y = 100                             ………………. (2)

    Solve equation (1) & (2) ,
    Equation (1) Subtract from (2) ,
    Then, 2 X – X + Y – Y = 100 – 80
    X = 20
    Then, the number of peacocks = 80 – 20
    = 60

    Hence, the answer is (3) 60.

    Anurag Mishra Professor Answered on 18th August 2015.
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