Explanation:

- Kil1i invested a sum of money in a scheme with interest calculated as simple interest over 3 years.

- The second scheme, "Shiksha," offers a simple interest rate that is 2% higher than the "Bacha" scheme.

- After 3 years, the additional interest earned from the "Shiksha" scheme is Rs. 540 more than the "Bacha" scheme.

- To find the invested amount, denote this amount by P.

- The difference in interest due to the 2% higher rate for 3 years is: $$P\times \frac{2}{100}\times 3=540$$

- Solving for P gives: $$P=\frac{540}{0.06}=9,000$$

Therefore, the amount Kil1i invested is Rs 9,000.

Option 2: Rs 9,000