Question

Phil is Tom's father. Phil is 35 years old. Three years ago, Phil was four times as old as his son was then. How old is Tom now?​

Answer 1

Phil: 35-3 = 32 = 4x (4 years ago)
Tom: X

4x = 32 |:4
x = 8

So Tom was 8 years old, 3 years ago. And Phil was 32 years old.

To get „now” age, just add 3
8+3=11
32+3 = 35

So now Phil is 35 years old, and Tom is 11 years old.