Mary’s salary is reduced by 10%. By what percentage must her new salary be…
2023
Mary’s salary is reduced by 10%. By what percentage must her new salary be increased in order to gain her old salary?
- A.
137/9 %
- B.
194/9 %
- C.
100/9 %
- D.
110/9 %
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Show answer & explanation
Correct answer: C
Answer: 100/9 %
Explanation:
Let the original salary be Rs 100.
After a 10% reduction the new salary is 100 − 10 = Rs 90.
The increase required to regain the original salary is Rs 10.
Required percentage increase relative to the new salary = (10/90) × 100% = 100/9 % ≈ 11.11%.
Therefore the new salary must be increased by 100/9 % to return to the original salary.