Question

Jack is twice as old as Lacy. In three years, the sum of their age will be 54. How old are they now?

Answer 1

Let the age of Lucy be `x`. Then Jack's will be `2x`.

`2x+x=54`

`3x=54`

`x=18`

So Lucy will be `18` in `3` years and Jack will be `36`. So subtract `3` to get their ages now.

Jack is `33` now and Lucy is `15`.