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, 2010

Algebra Difficulty 1.0 Junior Prove it Canada

Emily is charged $8$ cents per $100$ L of water that she uses. Using the new showerhead instead of the old showerhead saves water and so saves Emily money. How much money does Emily save in water costs for a $15$ minute shower?

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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.