Try the following ACT math practice question that tests your understanding of computing percent changes in the context of geometric shapes.

If the length of a rectangle is increased by $20\%$ and the area is unchanged, then the width is decreased by:

- $\quad 15 \frac{1}{3}\%$
- $\quad 16 \frac{2}{3}\%$
- $\quad 18\%$
- $\quad 20\%$
- $\quad 25\%$

**Video Explanation**

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