$50 is enough, I would have thought.

[GoldfishLord]

$50 is enough, I would have thought.
(Reference: https://learnersdictionary.com/definition/think )
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Q1: I'd like to know why "is" is used there instead of was
Q2: I'd like to know if the use of "would" matches definitions 3 or 12 at https://learnersdictionary.com/definition/would

 

[GoesStation]

In the present, $50 is a sufficient amount of money for whatever we're talking about. If I had thought about this in the past, I would have come to that conclusion.

Don't focus so much on dictionary definitions.

 

[jutfrank]

The fact that you've asked these questions confirms to me that your approach of trying to analyse single words from decontextualised sentences is a very poor one, which is a waste of your time and is possibly doing more harm than good.