Question:The length and breadth of a square are in increased by `40%` and `30%` respectively. The area of the resulting rectangle exceeds the area of the square by : 

A `42%` 
B `62%` 
C `82%` 
D None 

+ Answer
C 

+ Explanation
Let `∕ = 10m & b = 10m.`

Then, area`= 100 m^2`.

length`= 140% of 10 = 14 m.`

breadth`= 130% of 10 = 13 m.`

New area`= (14 xx 13) m^2`

`= 182 m^2`

Increases in area`= 82%`.

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Irin Moni

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