UKMT Grey Kangaroo, 2020

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

Werner's salary is 20% of his boss's salary. By what percentage is his boss's salary larger than Werner's salary?

(A) $80\%$ (B) $120\%$ (C) $180\%$ (D) $400\%$ (E) $520\%$

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.

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.