Cori is 3 years old today.  In 5 years, she will be one-third the age of her aunt.  How old is her aunt today?
In 5 years, Cori will be 3 + 5 = <<3+5=8>>8 years old.
In 5 years, Cori’s aunt will be 8 x 3 = <<8*3=24>>24 years old.
Today, her aunt is 24 - 5 = <<24-5=19>>19 years old.
#### 19