Maths Olympiad Prep

Library / CEMC Gauss (Grade 8) /480 of 525

CEMC Gauss (Grade 8), 2011

Geometry Difficulty 3.0 AMC 10/12 Find the answer Canada

In the diagram, AEAE and BDBD are straight lines that intersect at CC. If BD=16BD = 16, AB=9AB = 9, CE=5CE = 5, and DE=3DE = 3, then the length of ACAC is

(A) 1111 (B) 1212 (C) 1515 (D) 1717 (E) 1616

Figure for this problem

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.
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: 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.