B) From the following Trial Balance of Eric's Electronics Ltd, calculate the gross profit and net profit figures for the year ending 31st December 2021. Show workings. Debit Credit (000) (000) Opening Inventory 25 Purchases 215 Revenue 325 Wages and Salaries 20 Rent and Rates 12 Insurance 8 Equipment Rental 6 Distribution Expenses 15 Administration Expenses 18 Advertising and Sales 6 Promotions Owner's Drawings 10 Office Equipment 18 Buildings 50 Trade Payables 25 Tax Owing 4 Cash at Bank 12 Bank Loan Repayable in 16 2025 Owner's Equity 45 415 415 Further Information: 1. Closing Inventory at 31st December 2021 was 35,000. 2. Provide depreciation for Buildings at 10% on a straight-line basis. 3. On 31st December 2021, rent owing was 1,000 and Insurance pre-paid was 2,000.