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The problem depicted in the image deals with calculating an individual's income based on their spending and saving habits. Here's a detailed breakdown of the method shown:

1. **Understanding the Problem Statement**: The individual spends 1/5th of their salary, which means they save the remaining 4/5ths of their salary. However, out of this saved amount, they save an additional 1/5th of the remaining salary after the initial spending.

2. **Mathematical Representation**: Let's denote the total salary as \( x \).

3. **Initial Spending and Saving**: If they spend 1/5th, they save 4/5th of \( x \). So, the amount saved after initial spending is \( \frac{4}{5}x \).

4. **Additional Saving**: They save an additional 1/5th of the remaining salary (which is \( \frac{4}{5}x \) after the first spending). So, the additional saving is \( \frac{1}{5} \times \frac{4}{5}x = \frac{4}{25}x \).

5. **Equation from Problem**: According to the problem, the amount equivalent to this additional saving is 2500 Rs. Thus, the equation is \( \frac{4}{25}x = 2500 \).

6. **Solving for \( x \)**: To find \( x \), rearrange the equation:
   \[
   x = 2500 \times \frac{25}{4} = 15625 \text{ Rs.}
   \]

Thus, the total income of the individual is 15625 Rs. This process uses the direct method, where the relation between spending and saving parts of the salary is directly used to set up an equation that can be solved to find the total income.

Learn how to calculate an individual's income based on savings and spending habits with a detailed step-by-step solution. This problem involves key algebraic concepts and solving a linear equation. Suitable for students in Grades 8-10.

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