Civil Service Exam Reviewer · Percentage · hard
The length of a rectangle is increased by 20% and its width is decreased by 20%. What is the percent change in its area?
- No change
- 4% increase
- 4% decrease
- 9% decrease
Answer
C. 4% decrease
Solution
New area factor = 1.2 × 0.8 = 0.96 → 4% decrease.
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