A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented here: 
Using CPM, what is the latest finish time for the last activity in this project (i.e., the total time to complete the project) ?
Definitions:
Cognitive Abilities
Mental skills that include thinking, problem-solving, decision-making, and the ability to remember and learn.
Stage-like Manner
Describes a process of development or learning that occurs in distinct and separate phases.
Piaget
A Swiss psychologist known for his pioneering work in child development, focusing on how children acquire knowledge and the stages of cognitive growth.
Concrete Operational
A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.
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