A spends 45% of his salary on food and donates 5 % of his salary on old age homes. If he spends Rs.28,500 on food and old age homes, then what will be the salary of A?

Correct option is B

Given:
A spends 45% of his salary on food
A donates 5% of his salary to old age homes
The total amount A spends on food and old age homes is Rs. 28,500
Solution:
Let the salary of A as 'A'.
Spends on food and old age homes is 45% + 5% = 50% of A
50% of A = Rs. 28,500
S = $$\frac{\text{Rs. } 28,500}{50\%}$$​​
S = Rs. 57,000
Therefore, the salary of A is Rs. 57,000.

Alternate Method:
Let the total income of A be 100 units
So,
Remaining income after Spending Salary on food and old age = {100 – (45 + 5)} = 50 units
50 units 50 units
50 units → Rs. 28500
100 units → Rs. 57000