Economical, Economic, and the 18,000 Yen
A student is translating a club budget report into English for an international exchange. The Japanese original says the club made a decision to '節約' and that the result was '経済的'. The student's draft reads:
'We made an economical decision to reuse last year's banners, which was very economic for the club.'
The exchange partner, a native speaker, says the sentence is understandable but 'not quite right.' The student has a dictionary with four entries: economic, economical, economy, economics. The club actually saved 18,000 yen out of a 60,000-yen budget. The decision involved buying no new materials but spending two hours of member labor. The student needs a version that is precise, not merely impressive, and must explain the choice to a partner who thinks the two adjectives are interchangeable.
1. Choose the correct adjective for each blank and explain the distinction using the budget facts.
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Use 'economical' in both places: 'We made an economical decision ... which was very economical for the club.' 'Economical' means using money or resources efficiently, avoiding waste. 'Economic' describes the economy, economic systems, or financial matters at a broad level ('economic growth,' 'economic policy'). Reusing banners to save 18,000 yen out of 60,000 is a saving of 30 percent, which is exactly the efficiency sense. 'Very economic for the club' would suggest the club is an economy or a financial system, which is not the intended meaning. The two words are not interchangeable despite the shared root. The correction is lexical, not stylistic: the partner's 'not quite right' is a signal of collocation and meaning, not of formality.
2. A classmate suggests 'frugal' because it sounds more advanced. Is it appropriate here? Compare it with 'economical' in tone and typical use.
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'Frugal' is grammatical but less suitable. It usually describes a person or a habit of spending: 'a frugal student,' 'frugal habits.' It carries a slight tone of personal restraint or even hardship. 'A frugal decision' is possible, but in a club budget report it can suggest that the club is being stingy rather than efficient. 'Economical' focuses on avoiding waste in a procedure or purchase: 'an economical car,' 'an economical use of materials.' The facts support that focus: no new materials were bought, and 18,000 yen was saved. 'Frugal' would also say nothing about the two hours of labor, whereas 'economical' can cover efficient use of both money and effort. For a precise report, choose the word that names the kind of saving, not the word that sounds impressive.
3. Write one revised sentence in English that uses the correct term and makes the 18,000-yen saving explicit without adding facts.
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A precise version is: 'We made an economical decision to reuse last year's banners, saving 18,000 yen from our 60,000-yen budget.' This keeps the original action, replaces both wrong adjectives with 'economical,' and turns the abstract claim into a measurable result. It does not say the club saved 18,000 yen in labor; the two hours of member labor are a real cost but not a cash cost in the report, so the sentence should not imply that the total saving was larger. It also avoids 'very,' which adds emphasis without information. If the partner needs the contrast, add a second sentence: 'This was 30 percent of the budget.' That follows arithmetically from 18,000/60,000 and stays within the facts.