Radha get married 6 years ago. Today her age is 5/4 times her age at the time of marriage. Her sons age is 1/10 times her age. Her sons age is :

Let us assume the present age of Radha be Y years; then Before 6 years Radhas age will be Y - 6 years. According to question, Today her age is 11/4 times her age at the time of marriage, 5/4 ( Y - 6 ) = Y ( Since 11/4 = 5/4 ) ⇒ 5Y - 30 = 4Y ∴ Y = 30 years Hence, her sons age = 30 x 1/10 =3 years