Maths Olympiad Prep

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Number theory Difficulty 3.0 AMC 10/12 Find the answer Canada

Given a+2b+3c+4d+5e=ka+2b+3c+4d+5e=k and 5a=4b=3c=2d=e5a=4b=3c=2d=e, find the smallest positive integer value for kk so that aa, bb, cc, dd, and ee are all positive integers.

(A) 8787 (B) 522522 (C) 1010 (D) 120120 (E) 6060

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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.