- Calculate the ratios for year ending 31 December 2018(write down full formula and calculation process, put figures in chart, compare with 2017) 2.Point out the problems in individual ratio from both 2018 and 2017(need to have some causes and effects like: Gross Profit Margin FALLEN→wastage, poor workers; Net Profit Margin FALLEN→not managing expenses; Trade Receivable Days=37; Trade Payable Days=18 Could lead to CASH FLOW problems; Inventory Tenvoer LONGER→more storage costs, Theft+Brealages (Higher expenses) …etc,. and EXAMPLES. 3.give recommendations for improvement(most important paragraph!!!)