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      Question

      The ratio of the present ages of β€˜A’ and β€˜B’ is

      8:5, respectively. Three years hence from now, the age of β€˜B’ will be 23 years. If the average of present ages of β€˜A’, β€˜B’ and β€˜C’ is 25 years, then find the present age of β€˜C’.
      A 20 years Correct Answer Incorrect Answer
      B 22 years Correct Answer Incorrect Answer
      C 23 years Correct Answer Incorrect Answer
      D 24 years Correct Answer Incorrect Answer

      Solution

      Let the present ages of β€˜A’ and β€˜B’ be 8x years and 5x years, respectively Therefore, 5x + 3 = 23 Or, 5x = 20 Or, x = 4 Sum of present ages of β€˜A’ and β€˜B’ = 8x + 5x = 52 years Sum of present ages of β€˜A’, 'B’ and β€˜C’ = 25 Γ— 3 = 75 years Therefore, present age of β€˜C’ = 75 – 52 = 23 years

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