Mensuration · Question 7 · Medium
The length of a rectangle is increased by 20% and its breadth is decreased by 10%. What is the percentage change in its area?
- 2% decrease
- 8% increase
- 10% increase
- 8% decrease
Answer and explanation
Answer: B. 8% increase
Explanation: New area = 1.2 × 0.9 = 1.08 times the old area, i.e. an 8% increase.
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