New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A gift box has 10 bangles. The average weight of the

    first 4 bangles is 56gms and the average weight of the remaining 6 bangles is 57 gms. Tell the average weight of all bangles | (in grams)
    A 56.4 Correct Answer Incorrect Answer
    B 56.5 Correct Answer Incorrect Answer
    C 56.2 Correct Answer Incorrect Answer
    D 56.6 Correct Answer Incorrect Answer

    Solution

    Average weight of the first 4 bangles = 56 gm Sum of weight of the first 4 bangles = 56 x 4 = 224 gms Average weight of the last 6 bangles = 57 gm Sum of weight of the last 6 bangles = 57 x 6 = 342 gm Total weight of the 10 bangles = 224 + 342 = 566   Average weight of the 10 bangles = 566/10 = 56.6

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