Ratio and Proportion: 5600 Solved Exercises, Challenging Problems, and Detailed Theory for Success on the Quant Sections of the GMAT, GRE, and SAT (Math Test Prep)
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.