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 rate of interest per annum at which the total simple interest of a certain capital for 1 year is equal to the total simple interest of the same capital at the rate of 5% per annum for 2 years, is:

Option 1: $\frac{5}{2}$%

Option 2: $10$%

Option 3: $25$%

Option 4: $12.5$%

Question : The Simple Interest on a sum of money is $\frac{1}{4}$ of the principal, and the number of years is equal to the rate percent per annum. The rate percent is:

Option 1: 2.5%

Option 2: 5%

Option 3: 7.5%

Option 4: 10%

Question : A man invests half his capital at the rate of 10% per annum, one-third at 9% and the rest at 12% per annum. The average rate of interest per annum, which he gets, is:

Option 1: 9%

Option 2: 10%

Option 3: 10.5%

Option 4: 12%

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