question_answer

If the length of a rectangle is increased by 25% and the width is decreased by 20%, then the area of the rectangle

A)  increases by 5%

B)  decreases by 5%

C)  remains unchanged

D)  increases by 10%

Correct Answer: C

Solution :

[c] According to the question, Area of original rectangle \[=xy\] Area of new rectangle \[=1.25x\times 0.80y=xy\]