The number of white balls and red balls in a jar is in the ratio of 3:2. If there are 9 white balls, how many red balls are there?
(A) 5 (B) 8 (C) 2 (D) 6 (E) 3
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.