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    Question

    Average weight of all the people in a group is 60 kg.

    When two people of weight 66 kg and 84 kg left the group, average weight reduces by 1 kg. Find the number of people in the group now.
    A 30 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 32 Correct Answer Incorrect Answer
    D 26 Correct Answer Incorrect Answer

    Solution

    Let the number of people initially be 'n'.

    So, 60n - 59 ├Ч (n - 2) = 66 + 84

    Or, 60n - 59n + 118 = 150

    Or, n = 32

    Required number of people = 32 - 2 = 30

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