Question

A man whose income is rs 576 a year spends rs 432 a year. What percentage of his income does he save?

Answer 1

$$\begin{gathered} \mathrm{Yearly}\mathrm{income}\mathrm{of}\mathrm{man}=\mathrm{Rs}576 \\ \mathrm{Yearly}\mathrm{expenditure}\mathrm{of}\mathrm{man}=\mathrm{Rs}432 \\ \mathrm{Yearly}\mathrm{savings}=\mathrm{Rs}\left(576-432\right)=\mathrm{Rs}144 \\ \mathrm{Let}\mathrm{x}\%\mathrm{of}\mathrm{Rs}576=\mathrm{Rs}144 \\ \Rightarrow \frac{\mathrm{x}}{100}\times 576=144 \\ \Rightarrow \mathrm{x}=\frac{14400}{576}=25 \\ \mathrm{So},25\%\mathrm{of}\mathrm{the}\mathrm{income}\mathrm{is}\mathrm{saved}\mathrm{by}\mathrm{the}\mathrm{man}. \end{gathered}$$