To solve this question we have to make deduct these 2 years. 2102 minus 1987 will give the answer.
You are 115 years old.
(1380 months are passed.)
From 1987 to 2102 there are 115 years. If you want to learn your age in 2102 (born in 1987) your age is 115.
Let's see what will be your age if you born +1 or -1 from that date.