Как переводется предложение They are in their late sixties

Как переводится предложение

They are in their late sixties. — Они находятся в конце шестидесятых.

They are not in their late sixties.

Are they in their late sixties?

Where are they?

Are they or are you in their late sixties?

Are they in their late sixties or seventies?

They are in their late sixties are not they?