Question 17

A rectangle has a width ‘a’ and length 'b’. If the width is decreased by 20% and the length is increased by 10%, then whatis the area of the new rectangle in percentage comparedto ‘ab'?

Solution

Old rectangle area=ab.

new width =0.80a

and, new length=1.1b.

So, new rectangle area=0.8a×1.1b=0.88ab.

So, new area is 88% of old area of the rectangle.

D is correct choice.

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