Introducing ratio
By: Eon Harper, Joyce Harris, Richard Strong ; drawings by Scoular Anderson.
Contributors: Harris, Joyce, 1924-; Strong, Richard.
Series: Maths minipacks -- 14
Publisher: Addison Wesley
Published: 1980
Place of publication: (London)
Language: eng
Number of pages: 17
Subjects: Ratio and proportion -- Problems, exercises, etc.
Notes: With answers to coloured questions. - One answer sheet, with answers to all the questions, as insert with each pack of 5 books.