One year ago a father was four times as old as his son. In 6 years time, his age exceeds twice his son’s age by 9 years. Ratio of their ages is:

One year ago a father was four times as old as his son. In 6 years

1.	One year ago a father was four times as old as his son. In 6 years time, his age exceeds twice his son’s age by 9 years. Ratio of their ages is:
A.	13:4
B.	12:5
C.	11:3
D.	9:2
Answer» D. 9:2