A sum of Rs.810 is divided in two parts in such a way that the interest on first part at `4%` for 3 years is equal to that on second part at `5%` for 3 years. Find the two parts of sum

Explanation

To solve the problem, we need to find two parts of a sum of Rs. 810 such that the interest earned on the first part at 4% for 3 years is equal to the interest earned on the second part at 5% for 3 years.

Let's denote:
- The first part as \( P_1 \)
- The second part as \( P_2 \)

From the problem, we know:
1. \( P_1 + P_2 = 810 \) (Equation 1)
...