SOLUTION: When george was 12 his father was 3 times his age. Now his father his only twice his age. How old are they now. Please show working out

When George was 12, his father was thrice his age, or his father was 36

Their age difference, which will never change is: 36 - 12, or 24

With George's age being G, and his father's, F, we get: F - G = 24 ------ eq (i)

Currently, father is twice George's age, so we can say that: F = 2G ----- eq (ii)

2G - G = 24 -------- Substituting 2G for F in eq (i)

G, or George is:  years-old

Father is: 2(24), or  years-old