The following lots of a particular commodity were available for sale during the year: 
The firm uses the periodic system and there are 20 units of the commodity on hand at the end of the year.
What is the amount of cost of goods sold for the year according to the FIFO method?
Definitions:
Pavlov
A Russian physiologist known for his work in classical conditioning, demonstrating that dogs could learn to associate a neutral stimulus with food.
Physiologist
A scientist who studies the functions and mechanisms of the human or animal body, focusing on how organs and systems work together to respond to challenges and maintain health.
Physician
A professional who practices medicine, which involves diagnosing, treating, and preventing diseases and disorders.
Digestion
The process by which food is broken down into smaller components that can be absorbed into the bloodstream.
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