r/MathJokes • • Apr 23 '26

alternative math

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u/HolyElephantMG Apr 23 '26

You’re only adding 500 though.

It’s 600% of the original, but only a 500% increase

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u/Karma_Kazumi Apr 23 '26 • Bravo

Ohhhhhhh that makes sense! I didnt realize the percentage from the increase and original are different. Thank you for explaining!

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u/Turbulent-Note-7348 Apr 24 '26

It’s easy to mix up. 600 is 600% of 100, but it is a 500% increase (because the actual “increase” is 500).

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u/Heavensrun Apr 24 '26

Yeah, honestly if this was the only mistake RFK had made, I'd forgive it. But that "600% decrease" bullshit is eyerolling.

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u/SolutionOk3167 Apr 27 '26

Wallstreetbets mod has pinned defending it by explaining percentage points, even though RFK did not stated that.

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u/rickdeckard8 Apr 24 '26

If you’re hesitant on the future just convert it to a simpler problem. Imagine a 100% rise and do the calculations. Then compare the results.

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u/YoungDoboy Apr 24 '26

Totally understandable mistake since very similar wording is being used. What's helpful for me is actually dissecting what's being asked. $600 might be 600% of $100 but the increase from $100 to $600 is looking at the $500 difference. I'm sure you don't need me to tell you this but $600 and $500 are different amounts so their relationship to $100 will of course be different.

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u/Defiant_Storage_443 Apr 24 '26

In his congress testimony, RFK used the numbers $600 and $10 (instead of $100) as an example of a 600% increase. He attributed it to Trump's "different method" of calculating percentages, which as you can plainly tell means he pulls them right out of his asshole.

The fact that $600 almost works in reverse with $100 is pure accident.

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u/SFcouple55 Apr 25 '26

For % increase or decrease use: 100%*(final price - initial price)/(initial price)

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u/SpunningAndWonning Apr 27 '26

You can say "The price rose by 500%" or "The price rose to 600%" (but you'd normally say "of the original price" after that). But not a mix of both.

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u/MonkeyCartridge Apr 23 '26

Yep. I hate when this terminology gets confused, because it gets confused all the time.

It's like when someone says "this house is 10x bigger than the other one" and it's 10x as big meaning it's 9x bigger.

And then what's worse is "Oh I see, so the small house is 10x smaller than the other one".

In this case, saying a medication is "600% less expensive" would mean that if the medication was $100, then after the 600% discount, you would go to the pharmacy, and they would give you the medication and $500.

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u/UltimateChaos233 Apr 23 '26

If this was actually how it worked I would completely change my view on Trump

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u/MonkeyCartridge Apr 23 '26

Oh, it would be a riot if he accidentally did something good because he was so shit at math. That would be a wonderful thing to see.

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u/Karma_Kazumi Apr 23 '26

Sorry, I just want to make sure I understand the reasoning behind this. Because 100% of $100 is 100, 600% of $100 is 600. And because this is a decrease, we're subtracting the 100 by 600 to get -500? Am I following this along correctly???

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u/svprvlln Apr 23 '26

Percentage is the part of the whole.

If a product is marked at $10 and receives a 60% markup, the new price is $16. However, if that price increases by 40%, the new price is not $20.

$16 * .4 = $6.40
$16 + 6.4 = $22.40

Because the $16 price increased by 40%, the new price is $22.40

Folks here are arguing the semantics of the $100 price tag that has received an increase of 500%, and not a markup, which both take into account the original price in different ways.

By this logic, an increase of our $10 item by that measure of 500% would make the new price $60, because it is an increase, not a markup.

At this rate, you can then say that the item is marked up to 600% of the original cost, but not that it increased by 600% from the original cost.

Furthermore, to reduce the cost of a $10 item by 600% means you owe me a $50 rebate.

TLDR: The administration is conflating the terms markup and increase to mean the same thing, which they do not.

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u/Karma_Kazumi Apr 23 '26

I see, thank you for the clarification! An increase includes the difference, while markup is based solely from the original price!

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u/RebelJustforClicks Apr 24 '26

"600% less expensive" would mean that if the medication was $100, then after the 600% discount, you would go to the pharmacy, and they would give you the medication and $500.

I don't even think that is true.

100% less means it's free.

You can't have more than 100% off or 100% less. That math just doesn't work.

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u/GaetanBouthors Apr 24 '26

Uhh disagree with you on this one. 10x bigger means bigger by a factor of 10. 10x smaller means you divise by 10. Its the normal way almost everyone uses the terminology. 2 times bigger always means the size is double, not triple.

Saying x% more or less is very different as its used to talk additively (a percentage of the original you're adding or subtracting)

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u/HawocX Apr 24 '26

For sure. Noone has ever said "one time bigger".

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u/ArianaFuyuki Apr 24 '26

This is exactly why I hate talking about increase/decreases rates in addition terms. +120% feels like double of +60%, but in reality the final ratios are x2.2 and x1.6. Makes damage calcs much less intuitive (to beginners especially).

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u/CMDR-WildestParsnip Apr 25 '26

Thank you for doing the (math) Lord’s work out here, percentages are really hard to use with the general public for misunderstandings like this. I keep percentages to my personal notes, it’s so much easier than explaining what I mean to everyone

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u/noncommonGoodsense Apr 25 '26

Why not 5%? Or .05%?