Question

Sofia is 4 years younger than Mark. David is 7 years older than Mark. How old will Sofia be when David is 30 years old?

Answer 1

Sofia will be 19 years old.

Explanation:

First:

What know that David is 30 right now.

David=30

We also know that David is 7 years older than Mark, meaning that David-7=Mark

30-7=23 -Mark

And last we know that Mark is 4 years older than Sofia So we would do 23-4 to get Sofia age,

23-4=19 -Sofia

So in conclusion...

SOFIA: 19

MARK: 23

DAVID: 30

Answer 2

when david is 30, mark will be 37 which means sofia is 37-4 which means sofia will be 33 years of age

Explanation:

sofia. David. Mark

x-4. x+7. x