Solution —
Let the present age of Khushi = x
∴ Presnet age of Ankit = x + 3
According to question,
= x + 3 - 6 = 4(x – 6)
= x - 3 = 4x - 24
= 4x - x= 24 - 3 = 21
= 3x = 21
∴ x = 21 / 3 = 7 years
Therefore,
Khushi's age = x = 7 years
Ankit's age = x + 3 = 7 + 3 = 10 years