Engineering Economics
What is normally used to compare alternatives that accomplish the same purpose but have unequal lives?

Capitalized cost method
MARR
Annual cost method
Present worth method

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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 amounts of all payments are equal.
The first payment is made at the beginning of the first period.
The payments are made at equal interval of time.

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