# QA – Placement Quizzes | Percentages | Question 2

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 %

**Answer:** **(C)****Explanation:** Let her old salary be Rs 100. Then, her new salary = 100 – 10 = Rs 90.

So, to gain her old salary, her new salary must be increased by Rs 10. Therefore, the required percentage = (10⁄90) × 100% = 100/9 %.

Quiz of this Question