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Aptitude
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Verbal Reasoning
Computer Science
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Area
The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?
25% increase
50% increase
50% decrease
75% decrease
Show Answer
Correct Answer:
50% increase
Explanation:
Let original length =
x
and original breadth =
y
.
Original area =
xy
.
New length =
x
.
2
New breadth = 3
y
.
New area =
❨
x
x 3
y
❩
=
3
xy
.
2
2
∴ Increase % =
❨
1
xy
x
1
x 100
❩%
= 50%.
2
xy
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