Book excerpt: Quickly and accurately calculate key investment ratios Written by a leading finance expert, this book offers simple explanations on how to calculate and interpret key financial ratios. This information is essential for the accurate assessment of a company's financial condition and the true value of its shares. This book is packed with many worked examples from actual company reports and readers will also find many online reference sources-including company Web sites and free software offers. Plus, this book features a supporting Web site at www.magicnumbersbook.com. Magic Numbers is essential reading for individual investors and non-financial executives.