Beginning inventory, purchases, and sales data for hammers are as follows:

Mar. 3		Inventory	12 units at $15
11		Purchase	13 units at $17
14		Sale	18 units
21		Purchase	9 units at $20
25		Sale	10 units

Assuming the business maintains a perpetual inventory system, complete the subsidiary inventory ledger and calculate the cost of merchandise sold and ending inventory under the following assumptions:

(a) First-in, first-out

(b) Last-in, first-out