Question : The simple interest on a certain sum of money at the rate of 5% per annum for 8 years is Rs. 840. The rate of interest for which the same amount of interest can be received on the same sum after 5 years is:

Option 1: 7% per annum

Option 2: 8% per annum

Option 3: 9% per annum

Option 4: 10% per annum

Question : The difference between the simple and compound interest on a certain sum of money at an $8\%$ rate of interest per annum for two years is INR 56. Find the sum.

Option 1: INR 8750

Option 2: INR 7058

Option 3: INR 7805

Option 4: INR 8057

Question : The simple interest on a sum of money in 6 years at the rate of 15% per annum is INR 1,440 less than the simple interest accrued on the same sum in 9 years at 18% per annum. What is the sum of money (in INR)?

Option 1: 1800

Option 2: 2000

Option 3: 2700

Option 4: 2400

Question : A man borrowed a certain sum of money at the rate of 10% per annum simple interest for the first three years and 15% per annum simple interest for the period beyond three years. If he pays a total interest of INR 2,884.50 at the end of 7 years, then the sum of money (in INR) that he borrowed is:

Option 1: 3,860

Option 2: 3,090

Option 3: 4,550

Option 4: 3,205

Question : A sum of INR 12,000 amounts to INR 15,000 in 5 years at the rate of simple interest. What is the rate of interest per annum?

Option 1: 8%

Option 2: 7%

Option 3: 6%

Option 4: 5%