Engineering Economics
If ‘a’ is the base amount expenditure, ‘b’ is the increase in the operation cost each year over a period of’ 'n’ years, the total cost of maintenance is:

a + (n + 1) b
a - (n - 1) b
a + (n - 1) b
a × (n - 1) b

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Engineering Economics
A construction estimate is used

To produce a statement of the approximate cost
None of these
To decide an approximation of the value of the project and not the exact cost
To judge tentatively or approximate value of the project

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Engineering Economics
Under the depletion allowance method in computing depreciation, the depletion charge is equal to either ______ whichever is smaller.

50% of the fixed percentage of gross income or 50% of the net taxable income
Fixed percentage of gross income or the net taxable income
50% of the fixed percentage of gross income or the net taxable income
Fixed percentage of gross income or 50% of the net taxable income

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