The secret to solving this puzzle is to concentrate on how much money you make overall, not on each separate deal. We can find this out by subtracting how much you spent on the cow from how much you earned by selling it.
Amount spent on the cow: $800 for the first purchase plus $1100 for the second purchase equals $1900.
The total amount earned from selling the cow was $1000 from the first sale and $1300 from the second sale, which adds up to $2300.
Next, deduct the total amount you spent from the total amount you earned to determine your profit.
Earnings minus expenses equals profit. In this case, the profit is $400.
So, you earned a total profit of $400.
