Question

after spending 50% of his income and giving 20% of the remainder in charity , a man is left with Rs.600 . find his income.

Answer 1

Let, the total income be x.
Percentage of amount spent = 50%
Percentage of amount on charity = 20%
This means, percentage of amount left = 100% - (50% + 20%) = 30%
So amount of income left = 30% of x = Rs.600
$$\begin{gathered} \Rightarrow \frac{30}{100}\times x=600 \\ \Rightarrow x=\frac{600\times 100}{30}=2000 \end{gathered}$$
Therefore, total income = Rs.2000