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 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%

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 : Ramesh borrowed INR 15,000 at a certain rate of simple interest from a bank. He repaid (the principal but not interest) INR 6,000 after 5 years, and after 5 more years he paid  INR 18,600 and settled his account. Find the rate of simple interest per annum.

Option 1: 12%

Option 2: 10%

Option 3: 8%

Option 4: 6%

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%