Math help!

[kimboe]

My Friends daughter is having trouble with a question and asked for help.
Well i tried, and i don't get it?
If someone could help, that would be great.
Here's the question.

Jorge's Father is 4 times as old as Jorge is. In 20 years, his Father will be only twice as old as Jorge. How old is Jorge and his Father??

[Karen]

If Jorge is 5.5, and his dad is 22,
then in 20 years, Jorge will be 25.5, but his Dad will be 52 ... just one year off, hmmmm

I was always bad at logic puzzles.

[Freckles]

Father is 40 and Jorge 10.
40 +20 = 60 Father
10 +20 = 30 Jorge

[buckner]

Jorge is 10 and his father is 40.

If you use two-variable equations and solve, you'll find how old Jorge is, and then being able to find how old his father is.

4J - F = 0
2J - F = 20

You'd negate the bottom equation so you can have a positive F and a negative F so they cancel out. So:

4J - F = 0
-2J + F = -20

...

2J = -20, and that makes Jorge -10 years old, but because you can't be a negative age, he's just 10 years old!

And if he's 10 and his father is 40, his father is 4 times older. And in twenty years, Jorge will be 30 and his father will be 60, making his father only 2 times older.

[kimboe]

Oh, Ok!
Now it makes sense!!
I'm not very good at questions like that.
Thanks guys, you helped alot