This is a textbook for the 2025 academic year (purchased in 2024). There are minor scratches on the cover, but the inside pages have no writing, and the explanations are not detached, so it's in almost new condition. A problem book containing 60 basic math problems. - Series Name: Arithmetic Field-Specific Problem Collection: Basic - Number of Problems: 60 basic problems - Contents: Percentage, Ratio, Speed - Answers and Explanations: Included - Answers and Explanations: Included Thank you for looking.