Engineering Economics
A project construction cost estimate includes:

The profit of the contractor
The equipment and over head cost
The labour and material cost
All of these

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Engineering Economics
In a cash flow series:

The gradient in the cash flow may be positive or negative
All of these
Uniform gradient signifies that an income or disbursement changes by the same amount in each interest period
Either an increase or decrease in the amount of a cash flow is called the gradient

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