Please show numerical support for the following question

Presented below are the balance sheets of Proposition 13 Corporation as of January 1 and December 31 of the current year. Balance Sheets January 1 and December 31 Increase (Decrease) Assets Jan. 1 Dec. 31 Cash $150 300 450 Accounts Receivable, net (50) 450 400 Inventories 650 100 750 200 200 400 Buildings and Equipment 1,800 1,950 150 Less: Accumulated Depreciation 400 350 50 Total Assets $3,000 $3,600 $600 Liabilities and Stockholders' Equity Accounts Payable 700 550 $(150) Bonds Payable 1,000 1,200 200 Common Stock, par value $5 750 1,000 250 Additional Paid-in-Capital 250 300 50 Retained Earnings 300 550 250 Total Liabilities and Stockholders' Equity $3,000 $3,600 $600 Income Statement For the Year Ended December 31 Net Sales Revenue $4,200 Operating Expenses: Cost of Goods Sold $2,100 Selling and Administrative Expense 1,050 3,150 Primary Operating Income $1,050 Other Income (Expense): Gain on Sale of Land 175 Loss on Sale of Equipment (100) Interest Expense Pre-Tax Income from Continuing Operations $1,000 Income Tax Expense (40% 400 Net Income $600