Translation of "Fifties" in Russian

He's in his fifties.

Ему за пятьдесят.

He's in his late fifties.

Ему под шестьдесят.

Arthur was in his early fifties.

Артуру было немного за пятьдесят.

He only listens to rock bands from the fifties.

Он слушает только рок-группы пятидесятых годов.

And that really began in the late fifties, and sixties,

Она развилась в конце 50-х — начале 60-х,