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, 2006

Algebra Difficulty 1.0 Junior Find the answer Canada

On the "slow" setting, a fan rotates $100$ times in $1$ minute. The rate of rotation doubles on the "medium" setting, and doubles again on the "high" setting. How many times will the fan rotate in $15$ minutes on the "high" setting?

(A) $3000$ (B) $1500$ (C) $6000$ (D) $4500$ (E) $60\,000$

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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.