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      Question

      The present ages of A and B are in the ratio 2:3. After

      6 years, their ages will be in the ratio 4:5. Find B’s present age.
      A 9 yrs Correct Answer Incorrect Answer
      B 11 yrs Correct Answer Incorrect Answer
      C 13 yrs Correct Answer Incorrect Answer
      D 5 yrs Correct Answer Incorrect Answer

      Solution

      Let ages be 2x and 3x (2x + 6)/(3x + 6) = 4/5 5(2x + 6) = 4(3x + 6) 10x + 30 = 12x + 24 6 = 2x ⇒ x = 3 B = 3x = 9 years

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