Question: What is the present age of Arav?
Statements:
• I. Arav's present age is three times the age of his younger sister Manya.
• II. Four years from now, Arav will be twice as old as Manya will be then.

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A The data in Statement I alone is sufficient to answer the question.
B The data in Statement II alone is sufficient to answer the question.
C The data in both Statements I and II together are necessary to answer the question.
D None of these

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Answer: C. The data in both Statements I and II together are necessary to answer the question.

Answer: (C) The data in both Statements I and II together are necessary to answer the question.
Explanation:
1. Using Statement I alone: If Manya's age is x, Arav's age is 3x. We cannot find a unique value because there are infinite possibilities. (Insufficient)
2. Using Statement II alone: Four years later, (Arav + 4) = 2(Manya + 4). This is a single equation with two unknown variables. (Insufficient)

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Question: What is the present age of Arav? Statements: • I. Arav's present age is three times the age of his younger sister Manya. • II. Four years from now, Arav will be twice as old as Manya will be then.

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Question: What is the present age of Arav?
Statements:
• I. Arav's present age is three times the age of his younger sister Manya.
• II. Four years from now, Arav will be twice as old as Manya will be then.