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    Question

    The average age of 3 brothers is 24 years. If their ages

    are in the ratio 5:6:7, what is the age of the eldest brother?
    A 12 yrs Correct Answer Incorrect Answer
    B 28 yrs Correct Answer Incorrect Answer
    C 20 yrs Correct Answer Incorrect Answer
    D 18 yrs Correct Answer Incorrect Answer

    Solution

    ATQ,

    Sum of their ages = 3 × 24 = 72 years

    Let the ages of the brothers be ‘5x’, ‘6x’ and ‘7x’ years.

    So, 5x + 6x + 7x = 72

    So, x = 4

    Age of the eldest brother = 7x = 7 × 4 = 28 years


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