Explanation:

- The person spends 25% of his income on daily goods, leaving 75% of his income.

- From the remaining 75%, he spends 18% on house rent.

- This leaves him with 82% of the remaining amount after daily goods and rent.

- Then, he spends 16% of this remainder on travel.

- The remaining amount after these expenditures is Rs 861.

Let's calculate the salary step by step:

1. Let the salary be X.

2. After spending on daily goods, he has 0.75X left.

3. After rent, he has 0.75X * 0.82 left.

4. After travel, he has 0.75X * 0.82 * 0.84 = Rs 861.

Now, solving for X:

$$X=\frac{861}{0.75\times 0.82\times 0.84}=Rs1666\frac{2}{3}$$

- The options given:

- Option 1: Rs 1852$$\frac{1}{3}$$

- Option 2: Rs 1666$$\frac{2}{3}$$

- Option 3: Rs 1563$$\frac{1}{3}$$

- Option 4: Rs 1426$$\frac{1}{3}$$