Question

John is n years older than his sister. His sister’s age is 12. What is their total age?

Answer 1

Answer:

(12+n) + 12 is their total age .

Answer 2

Let John's sister age be x years.

We know that, x = 12 years.

So, John's age

= (x + 9) years

= (12 + 9) years

= 21 years

So, their total age

= (21 + 12) years

= 33 years