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ATQ,
Let the current ages of 'Arun' and 'Bhavesh' be 'x' years and 'y' years, respectively. Therefore, the current age of 'Chandan' = (y + 9) years.
Statement I: According to this statement:
Simplifying this equation:
Since we do not have enough information to find 'y', the data in Statement I alone is insufficient to determine Chandan's age.
Statement II: According to this statement, six years from now:
Simplifying this equation:
So, the present age of 'Chandan' = y + 9 = 21 + 9 = 30 years. Therefore, the information in Statement II alone is sufficient to find Chandan's current age, while the information in Statement I alone is not sufficient.
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