Q21 Ram is five years elder to his youngest sibling Shreya. Shreya is two years younger than her brother Ritesh. Ritesh is 13 years old and is Ram's brother. How old will Ram be in two years from now?

Q22 Four times the age of a mother is equal to nine times the age of her daughter. After nine years the mother's age will be twice her daughter's age. What is the present age of the daughter?

Q23 If 6 years are subtracted from the present age of Gagan and the remainder is divided by 18, then the present age of his grandson Anup is obtained. If Anup is 2 years younger to Madan whose age is 5 years, then what is Gagan's present age?