Engineering Economics
Pick up the correct reason for making conceptual (or preliminary) estimate from the following:

All of these
To check quotations from contractors and/or sub-contractors
To compute target estimate for the owner while drawing and specifications are in initial stage
To have a check on a definitive cost estimate

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

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