Answer:
Net Profit after tax was $800
Step-by-step explanation:
To calculate the Net Profit you don't need the 1.000 shares of common stock outstanding.
The Net Income it's detailed bellow:
$10.000 Sales
$-5.000 Cost of Goods
$-3.000 Operating Expenses
$-1.000 Interest Expenses
$1.000 Earnings Before Taxes
$-200 20% of tax rate
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$800