Beginning inventory, purchases, and sales for H76 are as follows:

July

1 Inventory 300 units at $120

12 Sale 210 units

23 Purchase 360 units at $135

26 Sale 330 units

Assuming a perpetual inventory system and using the weighted average method, deter-mine (a) the weighted average unit cost after the July 23 purchase, (b) the cost of the mer-chandise sold on July 26, and (c) the inventory on July 31.