If the difference between the compound and simple interest on a certain sum of money for 3 years at 5% per annum is ₹15.25, then find the sum.

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

Consider the following statements:

If a sum of money is lent at simple interest, then

(A) money gets doubled in 5 years if the rate of interest is $16\frac{2}{3}\%$.

(B) money gets doubled in 5 years if the rate of interest is 20%.

(C) money becomes four times in 10 years if it gets doubled in 5 years.

of these statements,

Choose the correct answer from the options given below:

If P = Rs. 2000, R = 5% per annual, T = 5 year

A. Total sum of amount = Rs. 2200

B. SI = Rs. 200

C. SI = Rs. 500

D. Total sum of amount = Rs. 2500

Choose the correct answer from the potions given below:

A sum is invested at 10 % per annum with simple interest. What will be the time taken to increase its value by 25% ?

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?

On compound interest, Rs. 2,000 amounts to Rs. 2,226.05 in 2 years. What is the rate of interest per annum ?