University of South Carolina High School Math Contest/1993 Exam/Problem 1
Problem
If the width of a particular rectangle is doubled and the length is increased by 3, then the area is tripled. What is the length of the rectangle?
Solution
Let be the length and be the width. We have that . Dividing by give so $\mathrm{(D)$ (Error compiling LaTeX. Unknown error_msg) is our answer.