A company's trial balance as of December 31, 20X11, is as follows:

Account	Debit (Dr)	Credit (Cr)
Cash	$80,000
Accounts Receivable	$100,000
Inventory	$110,000
Prepaid Expenses	$40,000
Property, Plant & Equipment	$450,000
Accumulated Depreciation		$70,000
Accounts Payable		$90,000
Notes Payable		$120,000
Common Stock		$200,000
Retained Earnings		$250,000
Sales Revenue		$550,000
Cost of Goods Sold	$250,000
Operating Expenses	$130,000
Income Tax Expense	$65,000
Dividends	$40,000

Calculate the following:

1. Gross Profit
2. Total Assets
3. Total Liabilities
4. Total Equity