human
Angelina is 4 years older than Justin is now. In 5 years, Angelina will be 40 years old. Calculate the age of Justin currently.
assistant
How old is Angelina currently? ** In five years, Angelina will be 40 years old, meaning currently she is 40-5 = <<40-5=35>>35 years old.
How old is Justin currently? ** Since Angelina is 35 years old right now, and she is four years older than Justin, it means Justin is 35-4 = <<35-4=31>>31 years old.
#### 31