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      Question

      The ratio of the ages of two sisters is 7:5, respectively.

      If the difference between their ages is 6 years, then find the age of the younger sister.
      A 15 yrs Correct Answer Incorrect Answer
      B 12 yrs Correct Answer Incorrect Answer
      C 18 yrs Correct Answer Incorrect Answer
      D 10 yrs Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the ages of the sisters be '7x' years and '5x' years, respectively.

      ATQ:

      '7x' - '5x' = 6

      Or, 2x = 6

      Or, 'x' = 3

      Therefore, the age of the younger sister = 5x = 5 × 3 = 15 years

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