Proportion of inspiration and perspiration? It's roughly 45% and 42% (5)
I believe the answer is:
ratio
'proportion' is the definition.
(I've seen this before)
'inspiration and perspiration? it's roughly 45% and 42%' is the wordplay.
'RATIO' is hidden within the letters.
But, I'm not sure how this is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for ratio that I've seen before include "eg 1:3" , "Correlation" , "five to four, perhaps" , "One to one - maybe" , "Relation between two things, numbers say" .)