Zippy Shoe Company uses a periodic inventory system. Zippy purchased $440$ pairs of shoes at $$69$ each in June, $960$ pairs in August at $$71$ each, and $630$ pairs in December at $$74$ each. Zippy sold $1,875$ pairs of shoes during the year.

Required:

Calculate the company's ending inventory and cost of goods sold using the each of following inventory costing methods.

a$.$ FIFO

b$.$ LIFO

c$.$ Weighted Average