The Same Basket in Two Countries
Written by Studio AM.
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Suppose a basket of rice, rent, transit, soap, and medicine costs 100 currency units in one country and 200 in another. A market rate may exchange the first 100 for 150 of the second. That conversion would not fully reflect local purchasing power. Economists use purchasing power parity, or PPP, to compare what money can buy within different economies. They price a broad basket of goods and services, then estimate a conversion rate that gives the basket similar value in each place. PPP-adjusted income often differs from income converted at financial-market rates.
The method answers an important question, but constructing the “same” basket is difficult. Foods, housing, public services, and habits differ. A train trip in a dense city may not be equivalent to fuel in a rural area. Quality changes, informal markets, and missing price data add uncertainty. National averages can also hide sharp regional and household differences.
Market rates still matter for imported goods, foreign debt, travel, and trade. PPP is more useful for some comparisons of living standards or the size of economies. Neither rate is the single true value of a currency; each is designed for a different question.
A good comparison therefore begins by naming its purpose. If the question is how much food and shelter local wages support, relative local prices matter. If the question is how many imported machines a company can purchase, the market rate may matter more. The basket is a model, not a universal shopping list, but it makes hidden price differences visible.
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Questions
Choose an answer. The explanation appears after you answer.
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Question 1 of 4
What is the main idea of the passage?
The answer is C: Purchasing power parity compares local buying power with a price basket, while market rates remain useful for different cross-border questions.
The passage explains PPP’s purpose, construction challenges, and complementarity with market rates.
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Question 2 of 4
Why is it hard to construct the same basket in two countries?
The answer is D: Products, services, habits, quality, and available price data may not be directly comparable.
The second paragraph lists several ways that apparent counterparts differ or cannot be measured well.
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Question 3 of 4
What does “parity” suggest in the phrase “purchasing power parity”?
The answer is A: an equivalent or matched buying value
The method estimates a rate that gives the basket similar value in each place.
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Question 4 of 4
For which purpose does the passage say market exchange rates matter?
The answer is B: buying imported goods
The third paragraph includes imported goods among uses where market rates matter.
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