Idiom: make a mint

[yasmine]

English Idioms and Expressions, Advanced Level

ESL/EFL Test #21 "Expressions with make", question 4

I reckon when they sold that lovely big house it must have made them a mint.

(a) provided them with a huge bucket of money
(b) provided them with a huge sum of money
(c) provided them with a huge box of money
(d) provided them with a huge tin of money

English Idioms and Expressions, Advanced Level

ESL/EFL Test #21 "Expressions with make", answer 4

I reckon when they sold that lovely big house it must have provided them with a huge sum of money.

Correct answer: (b) provided them with a huge sum of money
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what is the meaning of MINT

[Mister Micawber]

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A mint is a facility for manufacturing money. As an idiom, make a mint = make a lot of money.
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Native English teacher at Mister Micawber's