₹5500 is split into two parts. The interest earned on both parts is equal, with different interest rates (12% vs 8%) and different time periods (4 years vs 5 years).
Let the first part = x
Then the second part = (5500−x)
Simple Interest Formula: SI = 100P×R×T
Interest on first part = 100x×12×4
=10048x
Interest on second part = 100(5500−x)×8×5
=100(5500−x)×40
Since both interests are equal:
10048x=100(5500−x)×40
48x=(5500−x)×40
48x=220000−40x
48x+40x=220000
88x=220000
x=88220000
x=2500
First part = ₹2500
Second part = 5500−2500= ₹3000
Therefore, the two parts of the sum are ₹2500 and ₹3000.