The simple interest on a certain sum of money for \(2\frac{1}{2}\) years at 12% per annum is Rs. 40 less than the simple interest on the same sum for \(3\frac{1}{2}\) years at 10% per annum. Find the sum.
1
Rs. 450
2
Rs. 600
3
Rs. 700
4
Rs. 800
The simple interest on a certain sum of money for \(2\frac{1}{2}\) years at 12% per annum is Rs. 40 less than the simple interest on the same sum for \(3\frac{1}{2}\) years at 10% per annum. Find the sum.