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    Question

    Average of five numbers is 12. But the average of three of these is 10. The average of the rest two numbers is

    A 15 Correct Answer Incorrect Answer
    B 20 Correct Answer Incorrect Answer
    C 17 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer

    Solution

    ATQ, Let's denote the sum of the five numbers as'S'and their average as 'A'. Original average of five numbers: A = 12 Original sum of five numbers: S = A × Number of terms = 12 × 5 = 60  Now, let's consider the average of three of these numbers: A1 = 10 Sum of these three numbers:S1 = A1 × Number of terms = 10 × 3 = 30 Therefore, the average of the remaining two numbers is 15

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