Father is aged three times more than his son Ronit. After 8 years, he would be two and a half times of Ronit's age. After further 8 years, how many times would he be of Ronit's age?
A father’s age is four times that of his son. After 5 years, it will be three times that of his son. How many more years will take if father’s age is to be twice that of his son?