Engineering Economics
What refers to the ratio of the interest payment to the principal for a given unit of time and usually expressed as a percentage of the principal?

Rate of return
Interest rate
Return of investment
Yield

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Engineering Economics
Which one of the following questions is relevant to the construction estimates?

All of these
Did the estimators use short cut methods which may be unrealistic in their situation
Did the estimators precisely evaluate site conditions
How much money will the contractor's risk, loosing if he were to submit bid on the raw estimate of cost

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Engineering Economics
Perfect monopoly exists only if:

the single vendor is the only one who has the permit to sell
the single vendor is the only one who has the knowledge of the product
the single vendor can prevent the entry of all other vendors in the market
the single vendor gets the absolute franchise of the product

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