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

    Question

    A group of 35 people has an average age of 28 years.

    Later, 7 more people join the group and the average age becomes 25 years. What is the average age of the new people?
    A 8 years Correct Answer Incorrect Answer
    B 9 years Correct Answer Incorrect Answer
    C 10 years Correct Answer Incorrect Answer
    D 11 years Correct Answer Incorrect Answer

    Solution

    Initial sum = 35 × 28 = 980 years
    New average = 25 years
    New total = 42
    New total age = 42 × 25 = 1050 years
    Sum of new = 1050 - 980 = 70 years
    Average = 70 ÷ 7 = 10 years

    Practice Next
    More Average Questions

    Relevant for Exams:

    ask-question