To calculate the cost of goods available for sale, we need to add the purchases, returns inwards, and carriage inwards to the opening stock.The given information states:Purchases: D160,000Returns inwards: D620Carriage inwards: D740Opening stock: D14,100To calculate the cost of goods available for sale, we add these amounts:D160,000 + D620 + D740 + D14,100 = D175,460Therefore, the cost of goods available for sale is D175,460.