The difference between compound an simple interest at5% per annum for four years on Rs. 20,000is

The difference between the compound interest and simple interest on a certain sum for 2 years at 7.5% per annum is Rs 360. Find the sum.

The difference between the compound interest and simple interest on a certain sum for 2 years at 7.5% per annum is Rs 360. Find the sum.

If the difference between the compound and simple interests on a certain sum of money for 3 years at 5% per annum is Rs 15.25, find the sum.