Nah no fail here bro. Ya'll geniuses plus the idiots writing the articles don't understand math nor business. I am 100% right.
The stupid thing yall are saying is these are two separate transactions. But in every answer posted that says the profit was $20 at the end, is adding the profit from the first deal.
But then not adding the expense of buying the goat back. There is no business that equates their profit with only the cash back after a collection of transactions.
You have to ALSO account for the expense. Ya'll geniuses are not doing that.
Let me break it down like others have done, but this time this is 100% correct.
1- Buy the goat for $60 and sells it for $70 = $10 profit
2- Buy the SAME goat for $80, but how the F*ck did he get the $80 when he only had $70 from the 1st transaction?
He clearly needed to add $10 to his $70 to get the $80 dollars to buy back the goat. The $10 profit from the 1st transaction is NOW GONE! because he put $10 more dollars into his business in order to buy the goat the second time!
$10 profit + $10 business expense = BREAK EVEN!
**This is how business works.**
3- Dude is now even. With a used GOAT in his hands.
4- Dude sells the Goat for $90 and now is back at $10 profit.
This is how BUSINESS works. You don't look at each transaction separately and then just add the profit from each, YOU ALSO HAVE TO TAKE IN ACCOUNT THE EXPENSE.
Anyone says I'm wrong don't understand simple math or simple economics!