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.
I’m too… whatever… to do the math. How much was it initially?
x
It took me 14 hours but the math checks out guys
You didn’t show your work. Half marks.
It doesn’t matter if he did it, we just need know know that he tried.
100%
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.