Engineering Economics
What is the main reason why the sinking fund method of computing depreciation is seldom used in the industry?

Unstable economy
Rate of interest cannot be exactly determined
The initial depreciation is low
The initial deprecation is high

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Engineering Economics
Which is NOT an essential element of an ordinary annuity?

Compound interest is paid on all amounts in the annuity.
The first payment is made at the beginning of the first period.
The payments are made at equal interval of time.
The amounts of all payments are equal.

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