Funny riddle

A sister is as old as the brother will be when the sister is twice the age that the brother was when the sister's age was half the sum of their present ages.

What are the relation between their ages?

They're both younger than 100 years old.

That's a stupid riddle.

the sister was really just a man in a dress.

Since Blaxican is such a buzz-kill I'm going to give it a shot.

Here's a tabular for the relations.

Since we know that there's always a constant number of days in-between them we can construct (and solve) the following matrix.

Meaning that the relation is such that the sister is 4/3rds as old as her brother.

So the thread is now about checking if that's accurate.

we need to go deeper

Originally posted by Astner
Since Blaxican is such a buzz-kill

You know you love it.

Wait did I miss the funny part?

Originally posted by Miss Fiend
Wait did I miss the funny part?

sorry, guess im just too retarded to get the punchline

ahahaa mathematics 😆 all the ones and twos just so silly.

😐

Leave him alone, guys. People get off from different things. I get off to big booty'd bitches, Robtard gets off to my cousin, and Astner gets off to mathematical formulae. Be tolerant.

Originally posted by RE: Blaxican
Leave him alone, guys. People get off from different things. I get off to big booty'd bitches, Robtard gets off to my cousin, and Astner gets off to mathematical formulae. Be tolerant.

Oh all right FINE. 😖hifty:

Originally posted by Astner
Since Blaxican is such a buzz-kill I'm going to give it a shot.

Here's a tabular for the relations.

Since we know that there's always a constant number of days in-between them we can construct (and solve) the following matrix.

Meaning that the relation is such that the sister is 4/3rds as old as her brother.

So the thread is now about checking if that's accurate.

Read it again.

(x+y)/2 - z = x - y = 2z - x = c (constant, which is difference between ages)
Gonna do present n future first.
2z - y - c = 0
Oh shit, I gotta differentiate both y and z and find out the constant, then do the same logic for the past part of the sum.

I gave up on Maths at A Level, and it's 20 past 4. **** that, I'm going to bed, but I think I layed down some of the foundation stuff.

Originally posted by lord xyz
The future sister would be 2z.

Read it again.

Meaning -1 x, 0 y and 2 z.

The calculation is correct. Learn your linear algebra for ****'s sake.

People need to caaaaaalm down up in here.

Oh man, ALGEBRA?! You're killin me! roflroflrofl

3

Originally posted by lord xyz
(x+y)/2 - z = x - y = 2z - x = c (constant, which is difference between ages)
Gonna do present n future first.
2z - y - c = 0
Oh shit, I gotta differentiate both y and z and find out the constant, then do the same logic for the past part of the sum.

I gave up on Maths at A Level, and it's 20 past 4. **** that, I'm going to bed, but I think I layed down some of the foundation stuff.

I think you "laid" down a gross misspelling.

Well, that's a riddle, I don't see what's funny about it though. It may be a fun riddle to some. Astner is correct though.