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Multiple Choice Questions

If the length of a rectangle is increased by 10 and the breadth decreased by 20 a square of area 484...........

Quantitative Aptitude (RBI Grade B) Mensuration 2D

If the length of a rectangle is increased by 10% and the breadth decreased by 20%, a square of area 484 m²is obtained. What is the area of the rectangle in square meters?

500

450

550

458

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Explanation:

Let the length of the rectangle is 'l' and its breadth is 'b'.
Now the length is increased by 10% and its breadth is decreased by 20% and the resulting area is 484 m^2.
So we have
1.1l x 0.8b = 484
⇒ lb = 550 m^2.
∴ Area of rectangle = 550 m^2.

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