Maths Olympiad Prep

Library / /106 of 175

, 2026

Number theory Difficulty 2.0 Junior Find the answer United Kingdom

In Kush’s Cake shop, there are chocolate cakes, cherry cakes, cream cakes and coffee cakes. For every seven chocolate cakes, there are six cherry cakes. For every five cherry cakes, there are four cream cakes. For every three cream cakes, there are two coffee cakes. Which of these could be the total number of cakes in Kush’s shop?

(A) 6060 (B) 150150 (C) 240240 (D) 330330 (E) 420420

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: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.