Meenakshi spends $\frac{1}{4}$ of her monthly salary on rent and $\frac{2}{5}$ of the remaining amount on food. She is left with ₹12,600. What is her monthly salary?

Explanation

1. 01

   After rent, $\frac{3}{4}$ of the salary is left.

2. 02

   Food takes $\frac{2}{5}$ of that, so $\frac{3}{5}$ of $\frac{3}{4}$ remains: $\frac{3}{5} \times \frac{3}{4} = \frac{9}{20}$.

3. 03

   $\frac{9}{20}$ of salary = ₹12,600, so salary = $12600 \times \frac{20}{9}$ = ₹28,000.