Algebra Q # 19
0. A number is first increased by 10% and then decreased by 10%, then the number
- Option : C
- Explanation : Let the number be 100. After increasing by 10%, the number = 110% of 100 = 110 . After decreasing by 10%, the number = 90 % of 110 = 99 . Decrement in number = 100 -99 = 1 . Percentage decrease = (Decrease in number / Original number ) x 100% = (1/100) x 100% = 1%
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