Engineering Economics
What is defined as the current assets minus inventories and prepaid expenses?

Profit margin ratio
Price-earnings ratio
Return of investment ratio
Quick ratio

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Engineering Economics
Perfect monopoly exists only if:

the single vendor can prevent the entry of all other vendors in the market
the single vendor gets the absolute franchise of the product
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

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