Question:
A coolie deposits Rs 150 per month in his post office Savings Bank account. If this is 15% of his monthly income, find his monthly income.
Solution:
Let his monthly income be $\mathrm{Rs} \mathrm{x}$.
Then, $15 \%$ of $x=150$
$\Rightarrow \frac{15}{100} x=150$
$\Rightarrow x=\frac{150 \times 100}{15}$
$=1000$
$\therefore$ His monthly income is Rs 1000 .
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