To solve this question we have to make deduct these 2 years. 2120 minus 1990 will give the answer.
You are 130 years old.
(1560 months are passed.)
From 1990 to 2120 there are 130 years. If you want to learn your age in 2120 (born in 1990) your age is 130.
Let's see what will be your age if you born +1 or -1 from that date.