Beginning inventory, purchases, and sales data for hammers are as follows: 
Assuming the business maintains a perpetual inventory system, complete the inventory cards and calculate the cost of goods sold and ending inventory under the following assumptions:
(a) First-in, first-out 
(b) Last-in, first-out 
Definitions:
SOP
Standard Operating Procedure; a set of step-by-step instructions compiled by an organization to help workers carry out complex routine operations.
Mackintosh's Attentional Theory
A theory proposing that the allocation of attention during learning is influenced by the predictability of stimuli, affecting conditioning strength.
Conditioned Response Strength
The intensity or magnitude of a response that has been learned under conditional circumstances.
Conditioning
A process of behavior modification in which a subject learns to respond in a desired manner to a previously neutral stimulus that has been repeatedly presented along with an unconditioned stimulus.
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