Please answer the question and describe explanation with words.

The latest financial statements for a public limited company are summarised below: Income statements for the years ended 31" December in Emillions: Income Statements Sales Gross profit Operating profit Interest payable Profit before tax Taxation Profit after tax Dividends Retained profit for the year 2019 100 40 15 5 10 3 7 2020 110 43 17 9 8 2 6 6 6 1 0 Statements of financial position as at 31 December in millions: 2019 146 2020 244 Statements of financial position Non-current assets at net book value Current assets: Inventory Receivables Total assets 9 24 179 12 18 274 60 50p Ordinary shares Share premium Retained profits Shareholders' funds 0 48 108 90 20 48 158 Debentures 45 90 12 12 Current liabilities: Payables Bank overdraft Dividends Corporation tax Shareholders' funds and liabilities SINO 3 179 274 (a) Calculate the following ratios for each of the two years. (i) Return on equity (ii) Earnings per share Operating profit % sales (iv) Inventory holding period in days (v) Quick or acid test ratio