Crossword Genius

Hundred I'm investing in transaction, supplied in tens (7)

Ross

I believe the answer is:

decimal

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'supplied in tens' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs can occasionally define each other.

'hundred i'm investing in transaction' is the wordplay.
'hundred' becomes 'c' (Roman numeral).
'investing in' means one lot of letters goes inside another.
'transaction' becomes 'deal' (a deal is a transaction or exchange).
'c'+'im'='cim'
'cim' put inside 'deal' is 'DECIMAL'.

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(Other definitions for decimal that I've seen before include "Medical (anag.)" , "(System) based on tens" , "Claimed (anag) - a point" , "Based on the number 10" , "Using powers of ten" .)

I've seen this clue in The Independent.
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