Ever seen girl math?
“If I preload my Starbucks account with $25 and I go to Starbucks the following week, my order was free.”
“Spending money abroad doesn’t count because it’s a different currency.”
Things aren’t mathing as they should.
As I recently learned,
“If I return clothes to the store (store credit), but then buy new clothes (using that store credit), those new clothes are free. (No new money spent)”
Stupid people standing on soapboxes saying stupid shit.
Back in my day, people had to dedicate years of their life before they were given the opportunity to stand in front of hundreds of people and tell them things.
well it’s ambiguous. Its also a sloppy way of expressing an increase by 80 percentage points.
I think it’s ambiguous and the 90% actually makes more sense. If you increase something by 5m you are taking the original value and adding 5m to it. For multiplication you should probably avoid the word increase and say scaled by instead. 10% scaled by 180% is 18%.
It’s really pretty simple - if something increases by 80%, you add 80% of whatever it already is… one dollar becomes $1.80… one percent becomes 1.8 percent.
Most people don’t understand it because they’ve seen it done wrong so often, the wrong way seems right.
I’m quite willing to bet that 70% of the population has no clue that percentages, fractions, and decimals are the same thing.
The different ways in which numbers slide up, down, sideways, diagonally.
Is the example in the post part of the fifth type of arithmetic?
- Addition +
- Subtraction -
- Multiplication x
- Division /
- Modulo %
The first time I learned about modulo as its’ own branch of arithmetic was long out of school already, I had only hazily heard of it, on a PBS Nova documentary in the 1990s about Fermat’s famous theorem and when it was proven after centuries of failed tries.
Yeah we just learned “by” was a standard term for multiplication. So increased by 80% was just 1.8 times whatever you started with. “Divide by” meaning multiply inversely
Language translating to artithmetic. I’m sure it doesn’t always line up, as we change language quite often.
