Question

Meena spends 88% of her monthly salary. If she saves rupees3612 per month then, find her monthly expenditure.

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{monthly}\mathrm{salary}\mathrm{of}\mathrm{Meena}=\mathrm{Rs}\mathrm{x} \\ \mathrm{Percentage}\mathrm{of}\mathrm{salary}\mathrm{spend}=88\% \\ \mathrm{So},\mathrm{monthly}\mathrm{expenditure}=88\%\mathrm{of}\mathrm{Rs}\mathrm{x}=\frac{88\mathrm{x}}{100}=\mathrm{Rs}\left(\frac{22\mathrm{x}}{25}\right) \\ \mathrm{So},\mathrm{money}\mathrm{saved}=\mathrm{x}-\frac{22\mathrm{x}}{25}=\mathrm{Rs}\left(\frac{25\mathrm{x}-22\mathrm{x}}{25}\right)=\mathrm{Rs}\left(\frac{3\mathrm{x}}{25}\right) \\ \mathrm{Now},\mathrm{according}\mathrm{to}\mathrm{question}: \\ \frac{3\mathrm{x}}{25}=3612 \\ \Rightarrow \mathrm{x}=\frac{3612\times 25}{3}=30100 \\ \mathrm{So},\mathrm{monthly}\mathrm{expenditure}=\frac{22}{25}\times 30100=\mathrm{Rs}26,488 \end{gathered}$$