Try another version of this question Thomas lent his sister `$5,650` to help her buy a house. In ` 3` years, she paid him the `$5,650`, plus `$509` interest. What was the rate of interest?
Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
The rate was %
Enter DNE for Does Not Exist, oo for Infinity `3%`