2023 · Q66
If the length of a rectangle is increased by 66(2)/(3)%, then by what percent should the width of the rectangle be decreased in order to maintain the same area?
Elementary MathematicsPercentages
- A50%
- B45%
- C40%
- D35%
Explanation
Increasing the length by 66⅔% (= 2/3) multiplies it by 5/3. To keep the area unchanged the width must be multiplied by 3/5, a decrease of 2/5 = 40% (C).