Father and son's total present age is 40. After 16 years father will be twice son's age. Son's present age?

Present ages of father and son sum to 75. Fifteen years ago father's age was eight times son's age. After 7 years, son's age will be

Father and son's present ages total 50. Five years ago father was four times son's age. Present ages?

The age of Ram, 10 years ago, was thrice the age of Rahul. 10 years after, the Ram’s age will be twice the age of Rahul. The ratio of their present ages is

At present, the mothers age is three times the daughter's age. After twelve years the age of the mother will be twice of her daughter. At present what is the daughter's age?

Rahul is 3 times as old as Seema. Laxmi was twice as old as Rahul four years ago. In four year's time, Rahul will be 31. What are the present ages of Seema and Laxmi?