A certain sum on $13\frac{1}{2}\%$ per annum simple interest amounts to Rs. 2502.50 in 4 years. Find the sum.

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?

Consider the compound interest of the following

(A) The compound interest on Rs 16000 at 20% per annum for 9 months, compounded quarterly is: Rs 2522

(B) The compound interest on Rs 2800 at 10% per annum for 18 months, compounded annually is: Rs 434

Choose the correct statement(s):

In what time will the simple interest on ₹2200 at 6% per annum be the same as that on ₹1650 at 9% per annum in 10 years?

Ravi invested at compound interest amounts to Rs 600 in 2nd year and 642 in 3 years. what rate of interest per annum he recevied ?

The simple interest on a certain sum of money at 5% per annum for 4 years and 3 years differs by Rs. 42. What is the sum?

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