Library / /14 of 61

, 2017

Algebra Difficulty 1.0 Junior Prove it United Kingdom

A fully-grown long-tailed tit − Aegithalos caudatus − weighs only 9 g, whereas a £1 coin weighs 9.5 g. To the nearest 1%, what percentage of the weight of a £1 coin is the weight of a fully-grown long-tailed tit?

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.