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    Question

    In a zoo, there are some deer and some ducks, only. If

    the total number of heads counted in the zoo is 36 and total number of feet counted is 100, then find the number of deer in the zoo.
    A 14 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 18 Correct Answer Incorrect Answer
    D 20 Correct Answer Incorrect Answer

    Solution

    Let number of deer in the zoo = тАШxтАЩ And, total number of ducks in the zoo = тАШyтАЩ So,
    x + y = 36 ---- (1) And,
    4x + 2y = 100 So,
    2x + y = 50 ---- (2) On subtracting Equation (1) from Equation (2), we get x = 14 So, number of deer in the zoo = 14

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