Sweet tin for difficult age range (8)
I believe the answer is:
twenties
'for difficult age range' is the definition.
I can't judge whether this definition defines the answer.
'sweet tin' is the wordplay.
'sweet tin' anagrams to 'TWENTIES'.
However, I am not sure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for twenties that I've seen before include "decade of frivolity" , "period of years" , "Scores" , "First adult years" , "ten years" .)