I am x years old and my brother is 3 years older. How old was my brother last year?
Answer Details
If you are currently x years old, and your brother is 3 years older than you, then your brother's current age is x + 3.
To find out how old your brother was last year, you need to subtract 1 from his current age:
(x + 3) - 1 = x + 2
Therefore, your brother was x + 2 years old last year.
So, the correct option is (b) (x + 2) years.