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      Question

      Currently, the average age of Sam, Sarah, and Seth is 32

      years, whereas the average age of Sam and Sarah is 36 years. Calculate the age of Sarah after eight years if the present age of Seth is 25% less than the current age of Sam.
      A 65 yrs Correct Answer Incorrect Answer
      B 40 yrs Correct Answer Incorrect Answer
      C 48 yrs Correct Answer Incorrect Answer
      D 35 yrs Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, Sum of the current ages of Sam, Sarah, and Seth = 3 × 32 = 96 years. Sum of the current ages of Sam and Sarah = 2 × 36 = 72 years. Current age of Seth = 96 - 72 = 24 years. Sam's current age, given Seth's age is 25% less: Sam's age = 24/0.75 = 32 yrs Therefore: Sarah's age = 72-32 = 40 yrs Sarah's age after eight years = 40 + 8 = 48 years.

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