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1. If the length of rectangle is increased by 30% and the width is decreased by 30%, then the area will be
- A. Decreased by 9%
- B. Decreased by 9%
- C. Decreased by 9%
- D. Decreased by 9%
Answer: Option A
Explanation:
Short Cut Formula
A + B + AB/100 = 30 - 30 + 30*( - 30)/100 = - 9.
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