Maths hack blowing people’s minds
TWITTER isn't always the best place to learn new things.
Sure, you could learn about the worst red carpet looks from the Oscars, or watch a public celebrity feud unfold in real time, but Twitter isn't the ideal platform for scholarly pursuits.
Ben Stephens, a copywriter living in the UK, shared a simple trick to calculate percentages on Twitter last week.
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. Voila!
Fascinating little life hack, for doing percentages:— Ben Stephens (@stephens_ben) March 3, 2019
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.
The response to Ben's hack has grown to epic proportions in the last four days, with the post attracting more than 11,000 likes and almost 4,000 retweets.
People's comments circulated around how rocked they were by the simple magic 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.— Antoine van Oijen 🔬🧫🧬 (@van__Oijen) March 5, 2019
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
Some were just genuinely shook by Ben's "sorcery".
Why don't they teach this simple trick in school, it would have made maths SO much easier?!? 🤯 pic.twitter.com/qQ7L0xAjPA— Robert Fingleton (@RobertFingleton) March 5, 2019
For Ben, who claimed to have spent years talking about the perils of Brexit and Donald Trump, the instant success of his mathematical trick was rather amusing.
Keep up the good work, Ben. Can't wait to see what you've got for us next.