You have been provided with the following information for City Projects Ltd: Statement of Comprehensive Income for the year ended 31 March 2021 Revenue (all credit) Gross profit Operating profit Interest expense Profit before tax Net profit after tax R 610 000 390 000 170 000 17 000 153 000 110 000 Statement of Financial Position as at 31 March 2021 R R Assets Non-current assets 700 000 340 000 Current assets Inventory 70 000 REGENT BUSINESS SCHOOL (RBS) JANUARY 2022 16 POSTGRADUATE DIPLOMA IN PROJECT MANAGEMENT - ACADEMIC AND ASSESSMENT CALENDAR Debtors 150 000 Bank 120 000 1 040 000 Equity and Liabilities Owners' equity 600 000 Non-current liabilities 300 000 Current liabilities 140 000 1 040 000 Required: Calculate and comment on each of the following ratios (where applicable round off answers to two decimal places): 4.1 Gross margin (5) 4.2 Current ratio (5) 4.3 Acid-test ratio (5) 4.4 Debtors collection period (5) 4.5 Inventory turnover (5) 4.6 Return on assets