Question

The salary of a worker is first increased by 10%, and thereafter it was reduced by 10%. What is the change in the salary after these adjustments?

• A. $-2\%$
• B. $-3\%$
• C. $-4\%$
• D. $-1\%$

Answer 1

Answer: (A)

$-2\%$

Answer 2

Let the original salary of a person be 100 Rs.
His salary first increased by 10%.
$⇒ 100\times (\frac{110}{100})$
110 Rs.
After some time his salary is reduced by 10%.
$⇒ 110\times (\frac{90}{100})$
$⇒$99 Rs.
Now, his final salary is 99 Rs. which is 1% less than his original salary.
Hence, the correct answer is -1%
The correct answer is (D):$-1\%$