This Tutor will assist you in solving any percentage problem. You can select the type of problem and enter the values in your problem directly from your textbook or assignment sheet. After entering your best estimate, the Tutor will offer detailed comments about your estimate and provide suggestions for how it can be improved. The Tutor?s suggestions are always related to logical ways to think about percentages rather than just giving you a procedure to memorize. The Tutor emphasizes how to think about common ?landmark? percentage values, such as 50%, and how to use this knowledge to make good estimates.