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Salary of a person is increased by 20%, then it is decreased by 20%. Change in his salary is :
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- 4% decreased
- 4% increased
- 8% decreased
- neither decrease nor increase
Correct Option: A
If the value of a number is first increased by y % and later decreased by y %, the net change is always a decrease
which is equal to | % | 100 |
Here , y = 20%
∴ Required decrease = | = 4% | 100 |