Ramani invested Rs. K in a scheme for 3 years earning compound interest at the rate 2% per annum. If rate and time period of investment interchanged, and invested same amount then he received Rs. 24.64 less interest. Find the interest received by Ramani if he invested \(Rs. (\frac{3K}{2})\) in 3 years earning compound interest at 20% per annum.