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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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