To solve this question we have to make deduct these 2 years. 2091 minus 1975 will give the answer.
You are 116 years old.
(1392 months are passed.)
From 1975 to 2091 there are 116 years. If you want to learn your age in 2091 (born in 1975) your age is 116.
Let's see what will be your age if you born +1 or -1 from that date.