Library / /295 of 413

, 2010

Algebra Difficulty 2.0 Junior Find the answer Canada

The values of $r, s, t,$ and $u$ are $2, 3, 4,$ and $5$ , but not necessarily in that order. What is the largest possible value of $r \times s + u \times r + t \times r$ ?

(A) $24$ (B) $45$ (C) $33$ (D) $40$ (E) $49$

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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.