Question

Sameera spent 90% of her income and donated 3% for socially useful causes. If she left with Rs. 1750 at the end of the month,what was her actual income?

Answer 1

Sameera spent 90% of income.
Then she spent 3% of her income for social causes.

So she spent 90+3 = 93% of her income.
Now she is left with 100% - 93% = 7 % of her income.
Let her income be = Rs A.

So  7% of A = 7/100  * A
                   = Rs 1,750   (given)

A = Rs 1,750 * 100/7 =  Rs  25, 000.

Her income was Rs 25, 000.

Answer 2

Hey!

♣ Profit and Loss ♣

Given,
Sameera spent 90% of income.
She donated 3% of incomes for socially useful causes.
Then, Total income = (90+3)% = 93%
Now income left with her = (100-93)% = 7%

Here,
Suppose her income be x.
It's given she left with Rs.1750 at the end of month.
Then, 7% of x = 7/100 × x and given Rs. 1750.
 
Therefore,
x = 1750 × 100/7
   = Rs. 25000.
Hence, her actual income was Rs.25000.