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# CHAPTER 8 - INVENTORY COSTING
# --------------------------------
# GOAL :
# calculer COGS et Ending Inventory
# avec FIFO et Average Cost
# --------------------------------
# FORMULES ESSENTIELLES
# COGS = goods sold cost
# Ending Inventory = cost restant
# --------------------------------
# FIFO :
# First In = First Out
# COGS = plus anciens couts
# Ending Inv = couts les plus recents
# --------------------------------
# WEIGHTED AVERAGE COST :
# Average Cost = total cost /
# total units available
# COGS = units sold * avg cost
# Ending Inv = units left * avg cost
# --------------------------------
# PERPETUAL (si demande) :
# average cost mis a jour apres
# chaque achat (rare a l’exam)
# --------------------------------
# TERMS A RETENIR
# Beginning Inventory
# Purchases
# Goods Available for Sale =
# beg inv + purchases
# --------------------------------
# EFFECTS SUR PROFIT
# si prix montent :
# FIFO -> profit plus eleve
# Average -> profit moyen
# --------------------------------
# IMPORTANT EXAM :
# 1) FIFO utilise les plus vieux couts
# 2) Average = meme cost pour COGS & End Inv
# 3) toujours separer units sold vs units left
# 4) bien tracer tableau chronologique