SOLUTION: why is the sum of our age we are currently and the year we were born all add up too 113

Question 712367: why is
the sum of our age we are currently and the year we were born all add up too 113
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
I can tell that you recently had a birthday and are older than 13.

Let be the year you were born (with all four digits for the year).
People born before 2000 are used to naming the year they were born with just 2 digits, as in 93 for 1992. That two-digit number would be
<-->
We are in the year 2013, and today is February 9 where I live.

If you were born in January, or early in the month of February (before the 10th),
you recently had a birthday and your age is or
Then adding your age, and the year you were born you get
or
depending on how you name the year you were born.

However, if your birthdat is in late February (like mine), or later yet,
you would count your age as
or .
In that case, the sum would be
or
That is what I get for my sum,
and so would a little over 89.0%= of
the people.
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