Hema decided to donate 15% of her salary to a charitable trust. On the day of donation she changed her mind and donated Rs.4,500 which is 125% of what she has decided earlier. Find Hema’s salary.

Correct option is B

Given:

​Hema decided to donate 15% of her salary to a charitable trust

On the day of donation she changed her mind and donated Rs.4,500 which is 125% of what she has decided earlier

Hema’s salary = ?

​Solution:​ 

Let Hema's salary be denoted as $S$.

​Hema initially decided to donate 15% of her salary. This amount is:

Initial donation = 0.15S 

On the day of the donation, she changed her mind and donated Rs. 4,500, which is 125% of the amount she originally planned to donate. Therefore:

4500 = 1.25 × Initial donation 

Substitute the value of the initial donation

4500 = 1.25 × 0.15S 

Now, simplify the equation:

4500 = 1.25 × 0.15S

4500 = 0.1875S 

​$$S = \frac{4500}{0.1875}$$ 

​S = 24000 

Thus Hema's salary is Rs. 24,000.