I am thinking the answer is 40, what do you guys think? (explain in detail if you can, please)
What is the problem in helping this guy? I look at the internet for all questions I have.
I found your answer here:
FDV = Maximum supply of a token X Current market price of the token
In other words, FDV represents the future market cap of a project once all possible tokens have been issued provided the price of the token remains the same as of today.
https://coinsutra.com/fully-diluted-valuation-fdv/
So, if the company valuation is 15M for a total of 5% token supply, I think the answer is $300M.