To solve this question we have to make deduct these 2 years. 2120 minus 1960 will give the answer.
You are 160 years old.
(1920 months are passed.)
From 1960 to 2120 there are 160 years. If you want to learn your age in 2120 (born in 1960) your age is 160.
Let's see what will be your age if you born +1 or -1 from that date.