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.
The amount spent on the cow was $800 for the first purchase and $1100 for the second purchase, totaling $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, you need to subtract the total amount you spent from the total amount you earned to determine your profit.
Profit is the result of subtracting the money spent from the money earned. In this case, the profit is $400.
So, you earned a total profit of $400.
