The principal that amounts to ₹ $4913$ in $3$ years at $6 \frac{1}{4} \%$ per annum compound interest compounded annually (in ₹) is:

The simple and compound interests on a sum of money for $2$ years are ₹ $8400$ and ₹ $8652$ respectively. The rate of interest per annum is (in $\%$):

The difference of compound interest (in ₹) on ₹ $800$ for $1$ year at $20 \%$ per annum when compounded half-yearly and quarterly is:

On a certain sum of money,the simple interest for $2$ years is ₹ $200$ at the rate of $7 \%$ per annum. Find the difference between compound interest $(CI)$ and simple interest $(SI)$. (In ₹)

There is a $60 \%$ increase in an amount in $6$ years at simple interest. What will be the compound interest (in $Rs.$) on $Rs. 12,000$ after $3$ years at the same rate?

The population of a town increases by $5 \%$ every year. If the present population is $9261,$ what was the population $3$ years ago?