Question
The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?
Answer: Option B
- Let original length = x and original breadth = y.
Original area = xy.
New length = x . 2
New breadth = 3y.
New area = x x 3y = 3 xy. 2 2
Increase % = 1 x y x 1 x 100 % = 50%. 2 xy
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- Let original length = x and original breadth = y.
Original area = xy.
New length = x . 2
New breadth = 3y.
New area = x x 3y = 3 xy. 2 2
Increase % = 1 x y x 1 x 100 % = 50%. 2 xy
Was this answer helpful ?
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