LIFO METHOD ONLY PLEASE i need the ending inventory and the cost of goods sold

Concord Company uses a periodic inventory system. For April, when the company sold 550 units, the following information is available. Units Unit Cost Total Cost April 1 inventory 260 $15 $3,900 April 15 purchase 430 18 7.740 April 23 purchase 310 20 6,200 1,000 $17,840 Compute the April 30 inventory and the April cost of goods sold using the LIFO method