Rule of Three, Percentages and Interest

In this essential, Thomas Rießinger explains the rules of percentage and interest calculation using many examples. The basic terms of interest and percentage calculation and the corresponding formulas are repeated so that they are easy to apply in everyday life. The author applies the percentage calculation to interest rate problems and introduces different types of three-sentence calculation. This book is a translation of the original German 1st edition  Dreisatz, Prozente und Zinsen