Maths Olympiad Prep

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, 1998

Algebra Difficulty 3.0 AMC 10/12 Find the answer Canada

There are four unequal, positive integers aa, bb, cc, and NN such that N=5a+3b+5cN = 5a + 3b + 5c. It is also true that N=4a+5b+4cN = 4a + 5b + 4c and NN is between 131131 and 150150. What is the value of a+b+ca+b+c?

(A) 1313 (B) 1717 (C) 2222 (D) 3333 (E) 3636

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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.