Salary of a person is first increased by 20%, then it is decreased by 20%. Change in his salary is
4% decrease
4% increase
8% decrease
20 % increase
A
4% increase
B
8% decrease
C
20 % increase
D
4% decrease
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Solution
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Let the salary of the person be Rs. 100 After 20% increment, the salary will be Rs. 120 Again 20% decrement, now the salary will be120−20100×120= Rs. 96 ∴% change in salary is equal to 100−96100×100=4%.
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