If z=4, x+y=7, and x+z=8, what is the value of x+y+z?
(A) 9 (B) 17 (C) 11 (D) 19 (E) 13
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.