[GNC] cost of goods sold, unsold inventory

[Jamie Tolbert]

I am slowly wrapping my head around things, kinda stuck on a question 
about accounting for unsold inventory. Say I bought 10 widgets, for 100 
each, my cost of good sold is 1000; I sold 6 for 140 each. My sales is 
840, but my cost of good sold is only 600, not 1000, How do I account 
for the 4 remaining in inventory.