The advantage of a Gantt chart over other charts is its feasibility. practicality. simplicity. linearity.

Practicality

Explanation:

With a Gantt chart, the Production Supervisor would easily add dependencies and predecessor Activities and show production plans which makes it practical and easy to understand.

u = 30

continuing your method

= +

subtract from both sides

= - thus

= -

= ⇒ u = 30

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