Chapter 6 - Percent - Summary Exercises - Using the Percent Proportions and Percent Equation - Page 432: 25

$$132.5 \ million $$

We divide the percentage of tax returns filed electronically (91%), written as a decimal (.91), by the total number of tax returns filed electronically to find the total number of tax returns filed total. Doing this, we find: $$ =\frac{120.6}{.91} \\ = 132.5\ million $$