If you were born in 1994 how old would you be?

Answer 1

In future, you can calculate ages by subtracting the year of birth from the time it is now (or the year in which the story is set) like this:

2012

- 1994

________

18

Or, you can calculate the year of birth by subtracting age from the time it is now:

2012

- 18

______

1994