SSC MTS Model Paper 8

Question : 97 of 100

Marks: +1, -0

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

Solution:

(b) Effective change in area= (x + y +

(xy)/100

) %
where x and y denote percentagechange
= (20 - 2 0 -

(20×20)/100

) %
=-4%
Hence, the area will decrease by 4%

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