Calculate the activity and liquidity ratios for P for the year ended 31 December 20X9. Revenue Gross profit Inventory Trade receivables Trade payables Cash Short-term investments Other current liabilities $m 1,867.5 489.3 147.9 393.4 275.1 53.8 6.2 284.3 Current ratio= Current assets Current liabilities Inventory days Inventory days = inventory cost of sales * 365 Receivable days Receivable days receivables: credit sales * 365 Payable days Payable days = payables = credit purchases x 365.