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

Let Sameera's actual income be Rs x.
Money spent = 90% of x = $\frac{90}{100}x$
Money donated = 3% of x = $\frac{3}{100}x$
Money left = Rs 1750
Money spent + money donated + money left = Total income
$$\begin{gathered} \Rightarrow \frac{90}{100}x+\frac{3}{100}x+1750=x \\ \Rightarrow 7x=175000 \\ \Rightarrow x=25000 \end{gathered}$$
Thus, Sameera's actual income is Rs 25000