What is the project duration for the project network shown in the following diagram? 
Definitions:
Signaling Theory
A concept in economics and strategic management that addresses how parties communicate their qualities or intentions to others, often in situations where information asymmetry exists.
Quantity Of Labor
The total hours worked or the number of workers employed by a business or within an economy.
Contracting Services
The process of engaging an external company to provide services that could be performed by in-house staff.
Signaling View
An economic theory that suggests that education serves as a signal to employers about a potential employee's abilities.
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