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, 2009

Algebra Difficulty 3.0 AMC 10/12 Find the answer Canada

Each time Kim pours water from a jug into a glass, exactly $10\%$ of the water remaining in the jug is used. What is the minimum number of times that she must pour water into a glass so that less than half the water remains in the jug?

(A) $5$ (B) $6$ (C) $7$ (D) $8$ (E) $9$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.