Question:The length of a rectangle is doubled while its breadth is halved. What is change in area ? 

A `50% increase` 
B `75% increase` 
C `37.5% increase` 
D No change 

+ Answer
D 

+ Explanation
Let,length = a & breadth = b. Then, area = ab.

New length = 2a & New breadth` = b/2.`

:. New Area` = (2a xx b/2) = ab = original area.`

Thus, there is no change in area.

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Irin Moni

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