Taking about a quarter the time to dispose of (3)
I believe the answer is:
eat
'dispose of' is the definition.
'eat' can be an answer for 'dispose' (thesaurus). I'm not certain of the 'of' bit.
'taking about a quarter the time' is the wordplay.
'taking' is an insertion indicator.
'about' becomes 'a' (abbreviation in Chambers**).
'a quarter' becomes 'e'.
'the time' becomes 't'.
'e'+'t'='et'
'a' inserted within 'et' is 'EAT'.
'to' is the link.
Can you help me to learn more?
(Other definitions for eat that I've seen before include "Corrode" , "Bite, chew and swallow" , "Be corrosive" , "Take food" , "Consume for tea" .)