1 a) Carlos Company began the month with $4,000 in raw materials inventory. If the company purchased $28,000 of materials during the month, what is the company's cost of goods available for use during the month?

b) Consider (a) above. If an employee counted the raw materials left over at the end of the month and found the total cost of those materials to be $1,000, what was the cost of inventory used during the period?

c) A managerial accounting student is having trouble understanding this concept. Are there any visuals that you can think of that would help the managerial student visualize the relationship between the costs discussed above?