Maths Olympiad Prep

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, 2008

Algebra Difficulty 1.0 Junior Prove it Canada

The lines ax+y=30ax + y = 30 and x+ay=kx + ay = k intersect at the point P(6,12)P(6, 12). Determine the value of kk.

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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.