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.

# Answer

19
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
19
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?
train