Originally posted by FreakyKBH
I do not possess the keenest of mathematical minds, so I turn to those of you who can turn this into English for me. For the life of me, I cannot figure out the formula--- even though I know it's going to turn out to be the simplest of statements.
[quote]When the two-year birth year of the parent is reached by the age of the child, the parent's age has ...[text shortened]... ut, the same result follows any scenario I can devise.
I can't figure it out. Any help?
Parent is born in XY
Parent has child when B years old, this is Year XY + B
XY years later, the child is XY old, and the parent is XY+B years old which is also the year when the child was born.
i.e. adding the Year the parent was born to how old the parent was when they had the child gives the year when the child was born, pretty self evident really
It doesn't give a very good equation because its essentially:
XY + B = XY + B
which contains no information about the values of XY and B and so simplifies to the rather meaningless
0 = 0
And it obviously works for any numbers, with the constaint that, as it uses 2 digit years to equal age, the parents age cannot be more than 99 on the final date. (XY + B < 99)
Eg it works here:
parent Born in 1880
has child when 19, this is year 1899
When child is 80 parent will be 19+80 = 99, so that's ok
but it doesn't work here:
parent born in 1880
has child when 20, this is year 1900
when child is 80, parent will be 100, the parent's age is now not two digits so it can't equal a 2-digit year.