The Duncan Company provided the following information: 
The operating income before amortization during each of the three years the machine was in use was $300,000.
Compute:
a. the rate of return on the average investment for each of the three years using the net book value.
b. the rate of return on the average investment for each of the three years using the gross book value.
Definitions:
Political Campaign Activity
Activities designed to support or oppose political candidates or political parties, typically involving advertising, fundraising, and public engagement.
Social Change
The transformation of culture, behavior, social institutions, and social structure over time.
Life Cycle
The series of stages through which an entity (organization, product, etc.) goes, from its inception to its termination or dissolution.
Reinforcement Value
The potential effectiveness of a stimulus to encourage or strengthen a particular behavior in the context of behavioral psychology.
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