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

    Question

    There are ten numbers. The average of the first three

    numbers is 11, and the average of the last five numbers is 24. If the fourth and fifth numbers average 19, what is the overall average of all ten numbers?
    A 20.1 Correct Answer Incorrect Answer
    B 21.5 Correct Answer Incorrect Answer
    C 19.1 Correct Answer Incorrect Answer
    D 33.5 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Average of all the 10 numbers = {(3 × 11) + (5 × 24) + (2 × 19)/10}

    = {(33 + 120 + 38)/10} = 191/10 = 19.1

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