On what sum of money will compound interest (payable annually) for 2 years be the same as simple interest on ₹ 9430 for 10 years, both at the rate of 5 percent per annum ?

Simple interest on a certain sum of money for 4 years at 4% per annum exceeds the compound interest on the same sum for 3 years at 5 percent per annum by ₹ 228. Find the sum.

Mohit borrowed a certain sum at 5% per annum compound interest and cleared this loan by paying ₹ 12600 at the end of the first year and ₹ 17640 at the end of the second year. Find the sum borrowed.