Question

The length of a rectangular plot is increased by 25%. To keep its area unchanged, the width of the plot should be

• A. Kept unchanged
• B. Increased by 25%
• C. Increased by 20%
• D. Reduced by 20%

Answer 1

The Correct Option is D

Let length of rectangular plot be 4 m and width be 10 m
Area = lb = 40m²
After length is increased by 25%, new length = 5m
New width if area is same =\(\frac{40}{5}=8\) m
Therefore, Reduction in width =\(\frac{(10-8)}{10}\times100\)
The correct answer is (D): Reduced by 20%