Compound Interest - General Questions

What is the compound interest on Rs. 5,100 at 10% per annum for 2 years, compounded annually?

The difference between compound interest and simple interest on a certain sum at 8% per annum for 2 years is Rs. 30.08. What is the sum?

The difference between compound interest and simple interest on a certain sum at 15% per annum for 2 years is Rs. 51.75. What is the sum?

What is the compound interest on Rs. 15,600 at 15% per annum for 2 years, compounded annually?

Find the amount on Rs. 3,000 for 3 years at 10% per annum compounded annually.