# When I

When I am as old as my older brother is today, my brother will be twice as old as I am today.

a) How old is my brother if I am 8 years old today?

b) How old am I if my brother is 21 today?

a) How old is my brother if I am 8 years old today?

b) How old am I if my brother is 21 today?

### Correct answer:

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