The Cow Math Puzzle


This ‘too absurd’ puzzle puts your mathematics skills to the test as you try to work out how much one man earned as he repeatedly bought and sold a cow. Can you figure out how much profit he earned?

Let’s dive in and see if we can solve it together!

Here’s how the puzzle goes:
  • You sell the cow again for $1300, making a profit of $400 ($1300 – $900).
  • You buy a cow for $800.
  • You sell the cow for $1000, making a profit of $200.
  • You buy the cow again for $1100, but since you already made a profit of $200 from the first transaction, your effective cost for the second purchase is reduced to $900.

So, What’s the Correct Answer?

If you’ve been following along, you might have already guessed it. The correct answer to this cow math puzzle is $400. Let’s break it down step by step:

  • Purchase the cow for $800.
  • Sell the cow for $1000.
  • Net profit: +$200.
  • Re-purchase the cow for $1100.
  • Net profit becomes -$900.
  • Sell the cow again for $1300.
  • Total profit = $400.