The simple interest accrued on an amount of Rs. 84000 at the end of three years is Rs. 30240. What would be the compound interest accrued on the same amount at same rate in 2 years?

A certain sum becomes $\frac{36}{25}$ of itself after 2 years on compound interest. Find the rate of interest per annum.

The simple interest on a sum of Rs 1550 for 2 yrs is Rs 20 more than the simple interest on Rs 1450 for the same duration (the rate of interest is the same in both the cases). Find the rate of interest.

A sum of money becomes thrice of itself in 20 years. Find the simple interest rate per annum?

The difference between compound interest and simple interest on a sum for 2 years at 20% per annum, when the interest is compounded annually is ₹32. If the interest were compounded half-yearly, the difference in two interests would be:

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):

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