ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    The average weight of a group of 18 people is 35 kg. Six

    people leave the group, and the average weight of the remaining people increases by 3 kg. Find the average weight of the new group of people who joined the group to replace those who left, assuming the overall average weight returns to 40 kg.
    A 36 Correct Answer Incorrect Answer
    B 38 Correct Answer Incorrect Answer
    C 40 Correct Answer Incorrect Answer
    D 44 Correct Answer Incorrect Answer
    E 45 Correct Answer Incorrect Answer

    Solution

    Total weight of 18 people = 18 ├Ч 35 = 630 kg┬а Total weight of remaining 12 people = 12 ├Ч 38 = 456 kg┬а When the new group of 6 members joined, the total weight of 18 people = 18 ├Ч 40 = 720 kg┬а Total weight of new 6 people = 720 - 456 = 264 kg┬а Required average = 264 / 6 = 44 kg

    Practice Next
    More Quant Miscellaneous Questions
    ask-question