A) 50% increase
B) 50% decrease
C) 25% increase
D) 75% decrease
Correct Answer: A
Solution :
Let a and b be the length and breadth of rectangle. \[\therefore \] Area of rectangle, \[{{A}_{1}}=a\times b\] New length \[=\frac{a}{2}\] and new breadth = 3b \[\therefore \] Area of rectangle, \[{{A}_{2}}=\frac{3}{2}ab\] Change \[=\frac{1}{2}ab\] Per cent change \[=\frac{2}{ab}\times 100%=50%\]You need to login to perform this action.
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