Abby has 23 coins. The coins have a total value of $4.55. If she has only quarters (worth 25 cents each) and nickels (worth 5 cents each), how many quarters does she have?
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.