Objavil ga je uporabnik Twitterja in se kot požar širi po družbenih omrežjih.

Fascinating little life hack, for doing percentages:

x% of y = y% of x

So, for example, if you needed to work out 4% of 75 in your head, just flip it and and do 75% of 4, which is easier.

— Ben Stephens (@stephens_ben) March 3, 2019

“Fascinanten mali trik za računanje odstotkov: x % od y= y % od x. Na primer, če morate v glavi izračunati 4 % od 75, to samo obrnite, ker je veliko lažje izračunati 75 % od 4,” je zapisal v objavi.

Če želite izračunati, koliko je 6 % od 75, preprosto pomnožite 75 x 6, dobite 450 in to število delite s 100. Rezultat je 4,5 %.

Številni drugi uporabniki so izrazili svoje navdušenje nad tem trikom.

As someone who Quite Likes Maths I cannot believe I hadn’t realised this until the age of 47. https://t.co/4MFf8DuB6s

— Rhodri Marsden (@rhodri) March 6, 2019

“Sem nekdo, ki ima zelo rad matematiko in ne morem verjeti, da tega do svojega 47. leta nisem sam ugotovil.”

This is the day Twitter changed my life.

I earn a living as a scientist, juggling numbers every day, and I have never realised this:

X percent of Y is equal to Y percent of X

7% of 50 = 50% of 7 = 3.5

Not sure whether I should be happy or embarrassed… Maybe both. https://t.co/0rpVaJgPUh

— Antoine van Oijen (@van__Oijen) March 5, 2019

“Danes je dan, ko mi je Twitter spremenil življenje. Drugače sem znanstvenik, ki se cele dneve ukvarja s številkami, ampak tega nisem nikoli spoznal. Ne vem, ali bi moral biti srečen ali bi me moralo biti sram. Morda oboje.”

I used to teach maths for reporters as as part of JSchool and wish I’d had this explanation in my back pocket. I had other tricks for mathsphobes but this is far more elegant

— Ruth Callaghan (@RuthMCallaghan) March 5, 2019

“Učim matematiko, toda tega trika vse do danes nisem poznala. Poznala sem nekaj drugih trikov, toda ta je veliko boljši.”