If Mahima is 16 yr old, then what is the age of Lata?

Let Age of Mahima = x.
Age of Anita = 2x.
Age of Rajan = x/2.
Age of Deepti = 4x.
Age of Lata = x/4.
Mahima's age = 16 yr
∴ Lata's age = 16/4 = 4 yr