between the ages of 50 and 59 :
He retired in his fifties.
IN YOUR FIFTIES
Meaning of IN YOUR FIFTIES in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005
between the ages of 50 and 59 :
He retired in his fifties.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005