SOLUTION: i have a 30 ml bottle how many ml would i use to get 80% in the bottle ?

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Question 836590: i have a 30 ml bottle how many ml would i use to get 80% in the bottle ?
Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
You need to use (100-80=) 20% to get 80% in the bottle.
So, you need to use 30*0.2 = 6 ml