SOLUTION: why is the contaner of acids written 85,75 percent etc ?

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Question 629157: why is the contaner of acids written 85,75 percent etc ?
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
It means the percentage of acid is not known exactly
but that it is no more than 85% nor less that 75% acid.