A maths wizard by the name of Ben Stephens has blown the internet's mind.
Taking to Twitter the copywriter living in the UK, shared a simple trick to calculate percentages...and it's ridiculously easy to understand.
Describing it as a “fascinating little life hack”, Ben showed his followers that simply flipping your numbers, then multiplying them together, will calculate the percentage of any number you desire.
For example, 8 per cent of 25 is much easier to calculate, if you flip the numbers around, and multiply 25 by 8.
Divide that by 100, and you’ve got 2.
So 8 per cent of 25 = 2. Mind is well and truly blown.
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
The tweet has gathered 11,000 likes and almost 4,000 retweets.
And people have been commenting on the simplicity of Ben's trick.
One person claimed: “every teacher I have ever had has failed me”.
Others who work around numbers every day couldn’t quite believe they had never been shown the simple ‘switcheroo’.
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
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
God. Damn. https://t.co/JW0mTvhMDF
— Anne Hilborn (@AnneWHilborn) March 5, 2019
I appreciate this. Thanks for sharing a solid idea that for most will help with fundamentals or at least refresh them.
— The Irritant (@_TheIrritant) March 6, 2019
We can't wait to put this into practice in real life and go full maths genius in front of our friends.
