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The percentage change in area of a rectangle by decreasing its length and increasing its breadth by 5% is
- A.
no change
- B.
0.25% decrease
(Correct Answer) - C.
2.5% increase
- D.
0.25% increase
Correct Answer: 0.25% decrease
Explanation
Solution
1. Let Initial Dimensions be:
-
Length=L, Breadth=B
-
Initial Area (A1)=L×B
2. New Dimensions:
3. New Area Calculation:
4. Percentage Change:
Correct Option: (B)
Explanation
Solution
1. Let Initial Dimensions be:
-
Length=L, Breadth=B
-
Initial Area (A1)=L×B
2. New Dimensions:
3. New Area Calculation:
4. Percentage Change:
Correct Option: (B)