Zach is 15 1/2 years old. This is 3 years younger than his brother Lou. How old is Lou?
Brother Lou is 18 1/2 years old
If Zach is 15 1/2 years old, then how old is Lou, who is three years older than Zach?
This is a simple addition problem. Add
Or just imagine you're Zach's age--15 1/2. And you have an older brother that is 3 years older than you. He would be 18 1/2 years old.
Hope this helps!