Question : John invested a sum of money at an annual simple interest rate of 10%. At the end of four years, the amount invested plus interest earned is Rs. 770. The amount invested was:

Option 1: Rs. 650

Option 2: Rs. 350

Option 3: Rs. 550

Option 4: Rs. 500

Question : On a certain sum, the difference between compound interest and simple interest at 10% per annum for 2 years is Rs.250. The sum is _________.

Option 1: Rs.25,450

Option 2: Rs.26,550

Option 3: Rs.25,000

Option 4: Rs.26,000

Question : Find the difference between compound interest and simple interest when a sum of Rs. 15,625 is invested for 3 years at 4% per annum.

Option 1: Rs. 76

Option 2: Rs. 96

Option 3: Rs. 56

Option 4: Rs. 86

Question : The simple interest on a sum of money for 3 years is Rs. 240 and the compound interest on the same sum at the same rate for 2 years is Rs. 170. The rate of interest is:

Option 1: $8$%

Option 2: $29\frac{1}{6}$%

Option 3: $12\frac{1}{2}$%

Option 4: $5\frac{5}{17}$%

Question : The simple interest on a sum of money at 10% per annum for 2 years is 8,100. Compounded annually, what would be the compound interest (in ) on the same sum for the same period at the same rate of interest?

Option 1: 8,100

Option 2: 8,505

Option 3: 8,715

Option 4: 9,000