If 100 year is equal to the sum of the ages of father and son. 2:1 was the ratio of father and son before the period of 5 years . Find out the ratio of ages which would be after the period 10 year.

If 100 year is equal to the sum of the ages of father and son. 2:1

1.	If 100 year is equal to the sum of the ages of father and son. 2:1 was the ratio of father and son before the period of 5 years . Find out the ratio of ages which would be after the period 10 year.
A.	5 : 3
B.	1 : 7
C.	5 : 11
D.	7 : 9
Answer» B. 1 : 7