The ratio between the present ages of X and Y is 2 : 3. After 4 years, X's age will be 20 years. What is the age of Y at present?

12 years

24 years

16 years

14 years

Let the present ages of X and Y be 2x and 3x respectively. Then, 2x+4 = 20 => x = 16/2 = 8 .'. Y's present age = 3x = 3*8 = 24 years.

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