Let the present age of Ajay and Vijay be 2x and 3x respectively (∵ They are in 2 : 3 ratio) Ratio of their ages 4 years ago = (2x – 4) / (3x – 4) 3/5 = (2x – 4) / (3x – 4) Cross multiplying 9x – 12 = 10x – 20 ∴ x = 8 Present age of vijay = 3x = 24 years