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50 purse cent? (i.imgur.com)
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[-] LetMeEatCake@lemmy.world 36 points 1 year ago

You could make it work mathematically: the added 50% would need to be based on the initial price and not a modification on the adjusted price.

It's most logically interpreted as: x * 1.5 * 0.5 = 0.75x
But we could see it as: x - (x/2) + (x/2) = x

I'm equally fun at parties.

[-] LazaroFilm@lemmy.world 4 points 1 year ago

I’m too.. whatever.. to do the math. How much was it initially?

[-] starman@programming.dev 11 points 1 year ago
[-] Selmafudd@lemmy.world 5 points 1 year ago

It took me 14 hours but the math checks out guys

[-] Cabrio@lemmy.world 3 points 1 year ago

You didn't show your work. Half marks.

[-] nei7jc@lemmy.world 1 points 1 year ago

It doesn't matter if he did it, we just need know know that he tried.

[-] amos@lemmy.world 3 points 1 year ago
[-] LetMeEatCake@lemmy.world 1 points 1 year ago

In my algebraic version, it's x.

Maybe easier to understand is if we use the numbers from the story?
As the top level comment sees it (which again is the most logical way to interpret it), the price starts at $20. Seller gives 50% discount to buyer to bring it to $10 (50% of $20 is $10 -> $20-$10=$10). Seller then adds a 50% markup because it's their birthday too, bringing it up to $15 (50% of $10 is $5 -> $10+$5=$15).

In my interpretation all of the math is being operated on the initial $20. So it's $20 minus $10 for $10 for the discount, then $10 plus $10 for the markup.

this post was submitted on 09 Jul 2023
304 points (100.0% liked)

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