The length of a rectangle is increased by 33 33 By what per cent should the width be decreased...........

Quantitative Aptitude ( CCS) Mensuration 2D

The length of a rectangle is increased by 33.33%. By what per cent should the width be decreased to maintain the same area?

25%

33.33%

22.5%

None of these

Let the Initial length of rectangle is '30' and Breadth = '40'

After the increase, the length will become '40'.

Area = L * B

Area = 30 * 40

Area = 40 * 30 [B should become 30 from 40 in order to maintain the same Area]

So %age decrease in B = (40 - 30)/40 * 100% = 25%

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