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Rathin is now 16 years old while his cousin is 7 years. After how many years will Rathin’s age be 1.5 times that of his cousin?

Rathin is now 16 years old while his cousin is 7 years. After how many years will Rathin’s age be 1.5 times that of his cousin? Correct Answer 11

Let after N years Rathin's age be 1.5 times it’s cousin.

Rathin is now 16 years old while his cousin is 7 years,

⇒ (16 + N) = 1.5(7 + N)

⇒ 32 + 2N = 21 + 3N

⇒ N = 11

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