Library / /138 of 146

, 2025

Algebra Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

Together, $n$ aardvarks and 12 anteaters eat $n^2 + 20n + 25$ ants. Each animal eats the same whole number of ants. How many ants does each animal eat?

(A) $61$ (B) $66$ (C) $71$ (D) $74$ (E) $79$

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.