Final answer:
The student's question involves calculating net profit from stock transactions in Mathematics. After buying and selling stock, one must subtract the cost of the transactions and broker's commission from the gross profit to find the net profit, which in this case is $11,980.00.
Step-by-step explanation:
The question you're asking is related to the calculation of net profit after stock transactions, which falls under the category of Mathematics, specifically within the financial mathematics branch. Given the information, you bought and sold stock, making two separate transactions. The broker charged you a commission for both the buying and the selling process, but in the example calculation, it is simplified as a flat fee of $20.00. The net profit calculation would involve subtracting the initial investment ($15,600) from the total sale amount ($27,600), resulting in a gross profit:
$27,600 - $15,600 = $12,000.00
Then you would subtract the total commission or fees charged by the broker:
$12,000.00 - $20.00 = $11,980.00
This final amount represents your net profit after all expenses are accounted for. In stock trading, understanding these calculations is crucial for determining your actual gains from investment activities.