To solve this question we have to make deduct these 2 years. 2120 minus 2005 will give the answer.
You are 115 years old.
(1380 months are passed.)
From 2005 to 2120 there are 115 years. If you want to learn your age in 2120 (born in 2005) your age is 115.
Let's see what will be your age if you born +1 or -1 from that date.