Sales during tho year were 500 units. Beginning inventory was 250 units at a cost of $5 per unit. Purchase 1 was 400 units at $6 per unit. Purctuse 2 was 200 units at 57 per unit. Endirit inventory under the LFO cost fow assumption fire a periodic inventory sntemi was: $1250. 51. 850 12.200. 53200