📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    Question

    Average weight of all the people in a group is 58 kg.

    When two people of weight 65 kg and 81 kg left the group, average weight reduces by 1.2 kg. Find the number of people in the group now.
    A 25 Correct Answer Incorrect Answer
    B 27 Correct Answer Incorrect Answer
    C 29 Correct Answer Incorrect Answer
    D 23 Correct Answer Incorrect Answer
    E 30 Correct Answer Incorrect Answer

    Solution

    Let the number of people initially be 'n'.

    So, 58n - 56.8 × (n - 2) = 65 + 81

    Or, 58n - 56.8n + 113.6 = 146

    Or, 1.2n = 32.4

    Or, 'n' = 27

    Required number of people = 27 - 2 = 25

    Practice Next
    More Average Questions

    Relevant for Exams:

    ask-question