Question : The simple interest received on a sum is $\frac{4}{9}$ of the sum. The number of years is equal to the annual rate of interest. What is the annual rate of interest?

Option 1: 7.5%

Option 2: 6.66%

Option 3: 6%

Option 4: 5.25%

Question : The simple interest received on a sum at the rate of 8 percent per annum is $\frac{2}{5}$ of the sum. What is the period?

Option 1: 6 years

Option 2: 5 years

Option 3: 4 years

Option 4: 7.5 years

Question : The simple interest on a sum for 5 years is $\frac{3}{5}$th of the sum. The rate of interest per annum is:

Option 1: 10%

Option 2: 12%

Option 3: 8%

Option 4: $12\frac{1}{2}$%

Question : On a certain sum, simple interest at the annual rate of 12% for 6 years is Rs. 28800. What will be the compound interest on the same sum at the annual rate of 20% (compounding annually) for 2 years?

Option 1: Rs. 17600

Option 2: Rs. 19200

Option 3: Rs. 12000

Option 4: Rs. 14400

Question : Simple interest received by a person in 12 years on a principal of INR 12000 is 120% of the principal. What is the annual rate of interest?

Option 1: 20%

Option 2: 12%

Option 3: 10%

Option 4: 5%