The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
(a) 4 years (b) 8 years (c) 10 years (d) None of these
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?
times (b) 
times (c) 
times (d) 3 times