The book ""Key To Graduated Exercises In Arithmetic And Mensuration"" was written by James Harris and was published in 1872. The book is a comprehensive guide to arithmetic and mensuration, which is the branch of mathematics that deals with the measurement of geometric figures. The book is designed to be used as a companion to the ""Graduated Exercises In Arithmetic And Mensuration"" textbook, which is also written by Harris. The key provides solutions...