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 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 : A moneylender claims to lend money at the rate of 10% per annum simple interest. However, he takes the interest in advance when he lends a sum for one year. At what interest rate does he lend the money?

Option 1: $10$%

Option 2: $10\frac{1}{9}$%

Option 3: $11$%

Option 4: $11\frac{1}{9}$%

Question : A sum amounts to INR 7,656 in 4 years and to INR 8,120 in 5 years at a certain simple interest rate percent per annum. The rate of interest is:

Option 1: 4%

Option 2: 3%

Option 3: 7%

Option 4: 8%

Question : A sum amount doubles in 8 years by simple interest. Then the rate of simple interest per annum is:

Option 1: 10%

Option 2: 12.5%

Option 3: 15%

Option 4: 20%