9 years ago I was 9 years old. 9 years later, how old am I?
27 Years
Age at present = Age 9 years ago + 9 years
Age at present = 9 + 9
Age at present = 18 years old
So, your current age is 18 years old.
And 9 years later from the present, your age would be:
Age after 9 years = Age at present + 9 years
Age after 9 years = 18 + 9
Age after 9 years = 27 years old
Therefore, you will be 27 years old 9 years from now.