At Webster High School, the ratio of males to females writing the Pascal Contest is 3:7. If there are 21 males writing the Contest, what is the total number of students writing?
(A) 30 (B) 25 (C) 49 (D) 70 (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: 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.