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Источник:
International Economics Olympiad, IEO × Winter Challenge, 2023, 7–11 классы, Economics
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Тестовый вопрос
Mary finds a new teacher who helps her increase her studying productivity per hour. It would:
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educe the time she spends studying, since she achieves easier the same results
increase the time she spends studying, since she can achieve higher goals than before
not affect the time she spends studying, since she has the same need for relaxation as before
possibly cause any of the effects above, depending on Mary’s preferences
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