Simple interest on a certain sum of money for 3 years at 8% per annum is half of the compound interest on ₹ 6000 for 2 years at 10% per annum. Find the sum on which simple interest is calculated ?

The simple interest as a sum of money is $\frac{4}{5}$ of the principal. Find the rate of interest if both the rate of interest and time are numerically equal.

The simple interest on Rs 7200 at 14% per annum for 7 years is:

If the interest is payable annually, then the principal amount on which the compound interest for 2 years at 5% per annum is ₹ 369, is given by

In how many years Rs. 100000 will become Rs. 1,33,100 at compound interest rate of 10% per annum?

Consider the compound interest in the following cases:

(A) The compound interest on Rs 16000 at 20% per annum for 9 months, compounded quarterly is Rs. 2500

(B) The compound interest on Rs 2800 at 10% per annum for 18 months is Rs. 434.

Choose the correct statement(s):

A sum of Rs. 1000 is invested on compound interest (Compounded annually) for three years. If the rate of interest is 10% per annum for the first two years and 50% per annum for the third year, what will be the interest?