To solve this question we have to make deduct these 2 years. 2109 minus 1964 will give the answer.
You are 145 years old.
(1740 months are passed.)
From 1964 to 2109 there are 145 years. If you want to learn your age in 2109 (born in 1964) your age is 145.
Let's see what will be your age if you born +1 or -1 from that date.