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Question
Macroeconomics
Posted 10 months ago

The price elasticity of demand for good X\mathrm{X} equals 0 .
Which of the following is most likely to be a characteristic of good X?
Choose 1 answer:
(A) There is ample time to find alternatives to good XX.

B It has no substitutes and is a necessity.
(C) It is a luxury good.
(D) There are many firms selling a product almost identical to it.
(E) It makes up a large share of consumers' budgets.
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Answer from Sia
Posted 10 months ago
Solution
a
Price Elasticity of Demand (PED): The PED measures how much the quantity demanded of a good responds to a change in the price of that good. It is calculated by the formula PED=% change in quantity demanded% change in pricePED = \frac{\% \text{ change in quantity demanded}}{\% \text{ change in price}}. A PED of 0 means that the quantity demanded does not respond at all to a change in price
b
Characteristics of Goods with PED of 0: Goods with a PED of 0 are perfectly inelastic. This means that consumers will purchase the same amount regardless of the price. Such goods are typically necessities with no available substitutes
Answer
B. It has no substitutes and is a necessity.
Key Concept
Perfectly Inelastic Demand
Explanation
A good with a price elasticity of demand equal to 0 is perfectly inelastic, meaning quantity demanded remains constant despite changes in price, and it is usually a necessity without substitutes.

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