My Math Forum 100 in Percentage, why?
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 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 May 1st, 2018, 09:59 PM #1 Newbie   Joined: May 2018 From: PK Posts: 1 Thanks: 0 100 in Percentage, why? Hi all, Sorry for such a dumb question but I do use percentage on daily basis, it's just that I want to understand from much an elementary mind set. I know per cent means per 100 and all the examples given take 100 objects in question like 100 people, 100 balls in a basket but just want to understand why 100? Why not 200 or 101 or any other number? What significance does 100 have over any other number? Last edited by skipjack; May 2nd, 2018 at 02:22 PM.
 May 1st, 2018, 10:09 PM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,124 Thanks: 1102 Humans generally use base $10$. Over time $10$ was deemed too coarse a quantization, so $100=10^2$ was chosen instead. I wouldn't be shocked if there was some commodity that was commonly packed in hundreds and per cent arose as a trade term. Last edited by skipjack; May 2nd, 2018 at 02:20 PM.
May 1st, 2018, 10:12 PM   #3
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Quote:
 Originally Posted by romsek I wouldn't be shocked if there was some commodity that was commonly packed in hundreds and per cent arose as a trade term.
In finance a basis point is a hundredth of one percent. So when interest rates go up 1/2 a percent, that's 50 basis points.

https://en.wikipedia.org/wiki/Basis_point

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