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Compute Gross Profit Ratio from the following:- Particulars Opening Inventory 60,000 (Including loose tools $ 10,000) Closing Inventory 90,000 (including loose tools $ 15,000) 1,00,000 Cash Revenue from operations Credit Revenue from operations 1,70,000 Returns Outward 15,000 Purchases 2,90,000 Advertisement Expenses 30,000 Carriage Inward 10,000