Vaden Company Uses the Periodic Inventory System Calculate the Company's Cost of Goods Sold for Year 1

Vaden Company uses the periodic inventory system.The data presented below is from the company's accounting records for the year ended December 31,Year 1:
$\begin{array}{lr}\text { Sales } & \$ 600,000 \\\text { Sales discounts } & 10,000 \\\text { Purchases } & 350,000 \\\text { Purchase returns } & 5,000 \\\text { Beginning inventory } & 30,000 \\\text { Ending inventory } & 40,000 \\\text { Operating expenses } & 150,000 \\\text { Transportation-in } & 10,000 \\\text { Beginning retained earnings } & 71,000\end{array}$
Calculate the company's cost of goods sold for Year 1.