A clever cow-themed math puzzle has been making waves across social media, leaving plenty of people debating the correct answer. At first glance, the problem seems simple, but keeping track of the money through multiple transactions makes it surprisingly tricky. 👀

The answer given for the puzzle is $400. So, how do we get there?

The simplest approach is to treat each purchase and sale as a separate transaction. Start with the original purchase price, then subtract it from the first selling price to determine the profit from the first deal.

When the cow is purchased again, that creates a completely new transaction. The money earned from the first sale has already been received, so the second purchase does not 

cancel out the earlier profit.

For the second transaction, subtract the repurchase price from the second selling price. Then add the profit from both transactions together. Following the money step by step gives a total profit of $400.

The confusion usually comes from comparing only the first purchase price with the final selling price. That method skips the intermediate sale and repurchase. Another common mistake is treating the second purchase as though it reduces the profit that was already earned from the first transaction.

A simple way to avoid these errors is to write down every movement of money in chronological order:

• First purchase → money goes out
• First sale → money comes in
• Second purchase → money goes out
• Second sale → money comes in

Once everything is recorded, the calculation becomes much clearer.

This puzzle is a good reminder that profit depends on all completed transactions, not simply the difference between the first and last prices. The same principle applies when buying and selling cars, collectibles, stocks, or other items multiple times.

That’s also why puzzles like this spread so quickly online. The math itself isn’t difficult, but the wording encourages people to jump to an answer before carefully following the sequence of transactions.

In the end, there’s no complicated mathematical trick involved. The key is simply to track every payment and calculate each trade separately. When the two profits are added together, the result is $400.

Sometimes, the hardest part of a simple math puzzle is remembering not to skip a step. 🐄💰