this post was submitted on 09 Nov 2023
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[–] thisfro@slrpnk.net 0 points 1 year ago* (last edited 1 year ago) (1 children)

They probably did, just not explicitly:

You could write (6*1/100)*50 = 6*(50*1/100)

It only uses the commutative property of multiplication and the fact that % is another way of writing 1/100.

Maybe also worth remembering that "x% of y" is just x/100*y

[–] ikiru@lemmy.ml 0 points 1 year ago (1 children)
[–] Ravi@feddit.de 0 points 1 year ago

The word percent is exactly that per cent, which basically means parts of hundred. E.g. 10% are 10 of 100, or 60% are 60 of 100. You can also write this mathematically as 60/100 or 60÷100, which is 0.6.

Now in general: x% are x parts of 100 or x/100 or x÷100. If you want to calculate x% of y you just multiply it: y × x% = y × x ÷ 100.